JP6202565B2 - Electronic wind instrument system - Google Patents

Description

  The present invention relates to an electronic wind instrument system.

  Electronic wind instruments that electrically generate and output sounds such as those output from wind instruments (such as acoustic flutes) have been proposed. This type of electronic wind instrument holds in advance a table in which combinations of ON / OFF of each operation element such as a performance key and an expiratory pressure detection sensor are associated with a pitch of a sound output from a sound source. When the state of the operator changes, the pitch corresponding to the combination of the states of the changed operators is searched from the table, and the searched pitch sound is output.

Japanese Patent No. 4466576

  On / off of the operation element can be expressed by bit data ("0" or "1"), and a bit string composed of a plurality of bit data can be defined for each pitch in the table. The pitch of the sound to be output can be searched from the table by sequentially comparing the bit string based on the state detection result of each operator with the bit string in the table. However, since the number of combinations of the states of the operation elements is considerably large, it takes a long time to specify the pitch of the output sound in the sequential comparison method as described above. As a result, an unacceptably large delay may occur from when the user operates the electronic wind instrument until the sound is actually output.

  Accordingly, an object of the present invention is to provide an electronic wind instrument system that contributes to a specific speed increase of the pitch of a sound to be output.

  An electronic wind instrument system according to the present invention includes a tubular body provided with a plurality of sound holes and a plurality of keys for operating the opening and closing states of the plurality of sound holes, and a detection unit that detects the opening and closing states of the sound holes. A detection bit string generation unit that generates a detection bit string in which the bit data indicating the open / closed state detected for each sound hole is arranged for the plurality of sound holes, and a reference numerical value that holds a plurality of reference numerical values corresponding to a plurality of pitches A main processing unit for deriving a detection numerical value by digitizing the detection bit string and searching for the detection numerical value from the plurality of reference numerical values using a binary search; When there is a reference numerical value that matches the detected numerical value, a sound having a pitch corresponding to the reference numerical value that matches the detected numerical value is output.

  ADVANTAGE OF THE INVENTION According to this invention, it is possible to provide the electronic wind instrument system which contributes to the specific speed-up of the pitch of the sound which should be output.

1 is an overall configuration diagram of an electronic wind instrument system according to an embodiment of the present invention. 1 is an exploded configuration diagram of an electronic flute according to an embodiment of the present invention. It is a schematic block diagram of a trunk | drum insertion unit, a foot | leg part insertion unit, PC (personal computer), and a switch. It is a figure which shows the relationship between each sound hole of a trunk | drum pipe | tube, and a trunk | drum microcomputer. It is a figure which shows the relationship between each sound hole of a foot tube, and a foot microcomputer. It is a figure which shows the structure of the data which a trunk | drum microcomputer produces and transmits. It is a figure which shows the data transfer procedure between PC and a leg microcomputer. It is a figure which shows the structure of the data which a foot | leg part microcomputer produces and transmits. It is a figure which shows a certain key pattern and the content of corresponding data. It is an operation | movement flowchart of a trunk | drum microcomputer. It is an operation | movement flowchart regarding a port reading of a leg | foot microcomputer. It is an operation | movement flowchart regarding data reception of a leg | foot microcomputer. It is an operation | movement flowchart regarding USB communication of a leg | foot part microcomputer. It is a figure which shows the relationship between the pitch of the output sound of a flute, and the open / close state of each sound hole. It is a figure which shows the relationship between a pitch, a bit sequence, and a reference numerical value based on a part of FIG. It is a figure which shows the table which can be stored in the memory of PC. It is a schematic internal block diagram of PC. It is a figure which shows the example of the detection bit sequence and detection numerical value based on the state detection result of each sound hole. It is an example of the reference | standard image | video displayed on PC. It is a figure which shows the display image based on 2nd Example of this invention. It is a figure which shows the other display image based on 2nd Example of this invention. It is a figure which shows the display image which concerns on 3rd Example of this invention. It is a figure which shows the display image which concerns on 5th Example of this invention. It is a figure which shows the display image based on 6th Example of this invention. It is a figure which shows the other display image based on 6th Example of this invention. It is an exploded view which shows the relationship between a trunk | drum pipe | tube and a trunk | drum insertion unit. It is a partial sectional view and a partial plan view of a trunk section tube. It is a partial transmission top view of the peripheral part of the sound hole of a trunk | drum pipe | tube. It is a block diagram of an optical sensor. It is a figure which shows the method of attaching a fixing material to a board | substrate through a sound hole. FIG. 6 is an exploded view of an electronic flute around a joint portion between a trunk tube and a foot tube. It is a disassembled perspective view of a part of substrate mounting material and substrate according to the ninth embodiment of the present invention. It is a disassembled perspective view of a part of board | substrate attachment material which concerns on 10th Example of this invention, and a board | substrate.

  Hereinafter, an example of an embodiment of the present invention will be specifically described with reference to the drawings. In each of the drawings to be referred to, the same part is denoted by the same reference numeral, and redundant description regarding the same part is omitted in principle. In this specification, for simplification of description, a symbol or reference that refers to information, signal, physical quantity, state quantity, member, or the like is written to indicate information, signal, physical quantity, state quantity or Names of members and the like may be omitted or abbreviated.

  FIG. 1 shows an overall configuration diagram of an electronic wind instrument system SYS according to an embodiment of the present invention. The system SYS includes an electronic flute 1, a personal computer 2 (hereinafter referred to as PC 2) as an electronic device, and a switch 3. However, the switch 3 can be omitted from the system 1.

  FIG. 2 shows an exploded configuration diagram of the electronic flute 1. The electronic flute 1 is formed by attaching the units 20U and 30U to a normal acoustic flute. The acoustic flute includes a head tube 10, a trunk tube 20, and a foot tube 30 that are separable from each other, and is formed by connecting them. The head tube 10 is provided with a singing mouth (inlet), and each of the trunk tube 20 and the foot tube 30 is operated with a plurality of sound holes (tone holes) and the opening / closing states of the plurality of sound holes. A plurality of keys (operation members) are provided. Some keys may be operating members classified as levers. If the user breathes into the singing mouth with respect to the acoustic flute composed of the head tube 10, the trunk tube 20 and the foot tube 30, the sound based on the breath breathed from the acoustic flute without electrical action. Arise. The pitch of the generated sound depends on the open / closed state of each sound hole. In this specification, pitch refers to pitch. With the head tube 10, the torso tube 20, and the foot tube 30 in the acoustic flute disassembled, the torso insertion unit 20 </ b> U is inserted into the hollow portion of the torso tube 20, and the foot is inserted into the hollow portion of the foot tube 30. After inserting the part insertion unit 30U, the electronic flute 1 is formed by connecting the head tube 10, the trunk tube 20, and the foot tube 30.

  FIG. 3 shows a connection relationship among the unit 20U, the unit 30U, the PC 2, and the switch 3, and a schematic block diagram thereof.

  The unit 20U includes a body substrate 21, a body detection block 22 that detects the open / closed state of a plurality of sound holes provided in the body tube 20 for each sound hole, and a microcomputer 23 that acquires the detection result of the block 22. (Hereinafter referred to as a trunk microcomputer or microcomputer 23) and a connector 24 connected to the microcomputer 23. The block 22, the microcomputer 23, and the connector 24 are mounted on the body substrate 21. The block 22 has a sensor 22 </ b> S provided for each sound hole of the trunk tube 20. Each sensor 22S outputs a signal indicating the open / closed state of the corresponding sound hole (that is, a signal indicating whether the corresponding sound hole is in an open state or a closed state). By supplying the output signal of each sensor 22S to the microcomputer 23, the microcomputer 23 constantly monitors the open / closed state of each sound hole of the trunk tube 20. The detection and monitoring of the open / closed state of the sound hole refers to detection and monitoring of whether the sound hole is in the open state or the closed state.

  The unit 30U includes a foot substrate 31, a foot detection block 32 that detects the open / closed state of a plurality of sound holes provided in the foot tube 30 for each sound hole, and a microcomputer 33 that acquires the detection result of the block 32. (Hereinafter referred to as a foot microcomputer or microcomputer 33) and a connector 34 and an external terminal 35 connected to the microcomputer 33. The block 32, the microcomputer 33, the connector 34, and the external terminal 35 are mounted on the foot board 31. The block 32 has a sensor 32 </ b> S provided for each sound hole of the foot tube 30. Each sensor 32S outputs a signal indicating the open / closed state of the corresponding sound hole (that is, a signal indicating whether the corresponding sound hole is in an open state or a closed state). By providing the output signal of each sensor 32S to the microcomputer 33, the microcomputer 33 constantly monitors the open / closed state of each sound hole of the foot tube 30.

  In order not to impair the usability of the key, as the sensors 22S and 32S, an optical sensor whose output signal level changes depending on whether or not light is blocked can be used (detailed structure around the optical sensor will be described later). The light sensor as the sensor 22S or 32S outputs a low level signal when the corresponding sound hole is pressed (that is, when the corresponding sound hole is closed), and outputs a low level signal. When a hole is not pressed (that is, when the corresponding sound hole is in an open state), light passes and outputs a high level signal. In the following description, logical values “0” and “1” are assigned to the low level signal and the high level signal output from the sensor 22S or 32S, respectively.

  Connectors 24 and 34 are detachable from each other. When connecting the trunk tube 20 in which the unit 20U is inserted and the foot tube 30 in which the unit 30U is inserted, the connectors 24 and 34 are connected to each other. The microcomputers 23 and 33 can perform serial communication via the connectors 24 and 34. The microcomputer 33 is connected to the PC 2 via the external terminal 35 so that communication can be performed between the microcomputer 33 and the PC 2, and the switch 3 is connected to PC 2 so that communication can be performed between the switch 3 and the PC 2. . Here, the external terminal 35 is a USB terminal, and the foot board 31 and the microcomputer 33 are connected to the PC 2 and the switch 3 is connected to the PC 2 with a USB cable (a cable conforming to the USB (Universal Serial Bus) standard). It is assumed that the connection establishment process related to USB, such as plug and play, has been completed. However, as long as communication between the microcomputer 33 and the PC 2 and communication between the switch 3 and the PC 2 are possible, those connections may be any wired connection or wireless connection.

  When the switch 3 is connected to the PC 2, the PC 2 transmits a switch state read request command to the switch 3 at an arbitrary timing, and the switch 3 that has received the switch state read request command transmits to the PC 2 the switch 3 read request command. Switch status data indicating the status is returned to the PC 2. The switch 3 is an operating body that receives an input of a predetermined operation by the user. When the predetermined operation is input to the switch 3, the state of the switch 3 is turned on, and when the predetermined operation is not input to the switch 3, the state of the switch 3 Is turned off. The form of the switch 3 is arbitrary. For example, a commercially available foot switch can be used as the switch 3.

  As shown in FIGS. 4 and 5, the body tube 20 is provided with a total of 13 sound holes D to P, and the foot tube 30 is provided with a total of 3 sound holes A to C. Similar to the acoustic flute, the sound holes A to P include sound holes that are opened and sound holes that are closed when no external force is applied to all the keys. As described above, the body tube 20 and the foot tube 30 in the electronic flute 1 are provided with a total of 16 sound holes, and the user who is a player presses the key or presses the key against each key. The operation of not being given is selectively given. By pressing a key, the state of one or more sound holes corresponding to the key is switched from the open state to the closed state or from the closed state to the open state.

  The torso microcomputer 23 can create a data set 310 shown in FIG. 6A based on the output signal of each sensor 22S of the torso detection block 22 and transmit it to the foot microcomputer 33. Data set 310 includes data 312 and 313 and checksum 314. When transmitting the data set 310 to the foot microcomputer 33, the body microcomputer 23 first transmits the STX 311 indicating the start of data transmission, transmits the data 312 and 313, and the checksum 314, and finally transmits the data. An ETX 315 indicating the end is transmitted.

Each data length of the data 311 to 315 is 1 byte, and 1 byte is composed of 8 bits. Each of STX 311 and ETX 315 has predetermined fixed data. As shown in FIG. 6B, the data 312 and 313 include bit data b _{D to} b _P for a total of 13 bits each having an information amount for 1 bit. The bit data b _{D to} b _P have output logical values (logical values indicated by the output signals) of the sensor 22S corresponding to the sound holes _D to _P , respectively. The body microcomputer 23 monitors the output logic values (output signal levels) of the 13 sensors 22S corresponding to the sound holes D to P, and when there is a change in the output logic value of any of the sensors 22S, A data set 310 indicating the latest output logical value of the sensor 22S is serially transmitted to the foot microcomputer 33. The checksum 314 has an exclusive OR value of the data 312 and 313. If it is determined that there is an error in data transmission based on the checksum 314, the foot microcomputer 33 discards the received data set 310.

  FIG. 7 shows a data transfer procedure between the PC 2 and the foot microcomputer 33. The PC 2 transmits a data request command including command data for 2 bytes to the foot microcomputer 33 at an arbitrary timing. The foot microcomputer 33 returns the data set 320 to the PC 2 in response to the reception of the data request command through the confirmation process of the received command.

8A and 8B show the structure of the data set 320 transmitted from the foot microcomputer 33 to the PC 2 and the structure of data 322 to 324 in the data set 320. FIG. The foot microcomputer 33 forms data 322 to 324 based on the data set 310 received from the body microcomputer 23 and the output signals of the sensors 32S in the foot tube 30. The data set 320 is formed by adding a command 321 to the head of the data 322 to 324. The command 321 has predetermined fixed data. The data length of each of the data 321 to 324 is 1 byte. The data 322 to 324 include a total of 16 bits of bit data b _{A to} b _P each having an information amount of 1 bit. The data 323 and 324 in FIG. 8B are the same as the data 312 and 313 in the data set 310 (see FIG. 6B). The bit data b _{A to} b _C in the data 322 have output logic values (logic values indicated by the output signals) of the sensors 32S corresponding to the sound holes A to C, respectively, from the sensors 32S in the foot tube 30. can get.

FIG. 9 shows a key pattern 340 for generating a sound of the reference octave pitch name “do” in the acoustic flute and the contents of data 322 to 324 obtained when each key is operated by the key pattern 340. Since all the sound holes A to P need to be closed in order to produce the sound of the pitch name “do” of the reference octave, all the bit data b _{A to} b _P in the data 322 to 324 in FIG. (See also FIG. 8 (b)). The key pattern refers to a combination of operation states of a plurality of keys provided on the trunk tube 20 and the foot tube 30 and is synonymous with “fingering”. With respect to a certain key, the operation state of the key alternatively takes a state where the key is pressed or a state where the key is not pressed.

  In FIG. 9, a key pattern 340 is shown on the schematic diagram of the flute. In the key pattern 340 of FIG. 9, keys that are blacked out are pressed keys, and keys that are not are non-pressed keys (arbitrary key) The same applies to the later-described figures showing the key pattern). The pressed key refers to a key that is pressed or to be pressed by the user, and a non-pressed key refers to a key that is not pressed or should not be pressed by the user.

  FIG. 10 is an operation flowchart of the trunk microcomputer 23. The body microcomputer 23 is provided with ports for receiving the output signals of the sensors 22S by the number of sensors 22S. When a predetermined program is started in the body microcomputer 23, the port and memory of the body microcomputer 23 are first initialized in step S11. The memory of the body microcomputer 23 has first and second memories. The first and second memories may indicate two memory areas in a single memory (the same applies to third to fifth memories described later). After the initialization, in step S12, the state of each port of the body microcomputer 23 (that is, the output logical value of each sensor 22S indicating the state of each sound hole D to P) is read and stored in the first memory. In the subsequent step S13, the state of each port of the body microcomputer 23 is read again and stored in the second memory. Thereafter, in step S14, the body microcomputer 23 collates the saved content of the first memory in step S12 with the saved content of the second memory in step S13. If they match each other, the process proceeds to step S15, whereas if they are different from each other, the process returns to step S12. The processes in steps S13 and S14 are repeatedly executed until the coincidence between the saved contents of the first memory and the saved contents of the second memory is continuously confirmed four times, and only when the coincidence is confirmed four times. Then, it is determined that the state of each sound hole has been correctly read from each sensor 22S, and the process proceeds to step S16.

  In step S16, the body microcomputer 23 confirms that the data 312 and 313 (see FIG. 6B) based on the latest read result in step S13 are the same as the data 312 and 313 previously transmitted to the foot microcomputer 33. Confirm. If they are the same, the process returns to step S12. If they are different from each other, the process proceeds to step S17. However, if the data 312 and 313 have not yet been transmitted to the foot microcomputer 33 after the body microcomputer 23 is activated, the process proceeds from step S16 to step S17 unconditionally. In step S17, the body microcomputer 23 adds the data 312 and 313 based on the reading result in step S13 to the data set 310 (see FIGS. 6A and 6B) according to the transmission method described above. To the microcomputer 33. Then, it returns to step S12. Steps S13 to S15 are provided to avoid erroneous determination of the sound hole state, but steps S13 to S15 can be omitted, and the number of coincidence confirmations in step S15 is other than “4”. However, the same applies to steps S23 to S25 described later.

  FIG. 11 is an operation flowchart regarding port reading in the foot microcomputer 33. The foot microcomputer 33 is provided with ports for receiving the output signals of the sensors 32S by the number of sensors 32S. When a predetermined program is started in the foot microcomputer 33, the port and memory of the foot microcomputer 33 are first initialized in step S21. The memory of the foot microcomputer 33 has third to fifth memories. After initialization, in step S22, the state of each port of the foot microcomputer 33 (that is, the output logical value of each sensor 32S indicating the state of each sound hole A to C) is read and stored in the third memory. In the subsequent step S23, the state of each port of the foot microcomputer 33 is read again and stored in the fourth memory. Thereafter, in step S24, the foot microcomputer 33 collates the saved content of the third memory in step S22 with the saved content of the fourth memory in step S23. If they match each other, the process proceeds to step S25, while if they differ from each other, the process returns to step S22. The processes in steps S23 and S24 are repeatedly executed until a match between the saved contents of the third memory and the saved contents of the fourth memory is continuously confirmed four times, and only when the coincidence is confirmed four times. Then, it is determined that the state of each sound hole has been correctly read from each sensor 32S, and the process proceeds to step S26. In step S26, the foot microcomputer 33 stores the state of each port read in step S23 in the fifth memory, and then returns to step S22.

  FIG. 12 is an operation flowchart related to data reception from the body microcomputer 23 in the foot microcomputer 33. When a predetermined program is started in the foot microcomputer 33, the memory of the foot microcomputer 33 is first initialized in step S31. The initialization in step S31 is performed in common with the initialization in step S21 described above and the initialization in step S41 described later (see FIGS. 11 and 13). The memory of the foot microcomputer 33 also has sixth and seventh memories. In step S32, the foot microcomputer 33 waits for the data set 310 (see FIGS. 6A and 6B) to be transmitted as serial data from the torso microcomputer 23, and receives the data set 310 when it is received. The data set 310 is stored in the sixth memory, and the process proceeds to step S33.

  In step S33, the foot microcomputer 33 checks the parity of the received data, confirms that the received data starts with STX and ends with ETX, and that the data length of the received data is 5 bytes, and receives based on the checksum 314. Check for data errors. If there is no error in the received data, the process proceeds to step S34. If there is an error in the received data, the received data is discarded and the process returns to step S32. In step S34, the foot microcomputer 33 stores the data 312 and 313 (see FIG. 6B) in the received data in the seventh memory, and returns to step S31. The latest state of each of the sound holes A to P is indicated by the data stored in the fifth and seventh memories (see FIGS. 11 and 12).

  FIG. 13 is a flowchart of operations related to USB communication with the PC 2 in the foot microcomputer 33. When a predetermined program is started in the foot microcomputer 33, the memory of the foot microcomputer 33 is first initialized in step S41. In the following step S42, the foot microcomputer 33 confirms that it is connected to the PC 2 via USB, and if not connected to the PC 2, the process returns to step S42, but if connected to the PC 2, the step microcomputer 42 returns to step S42. Proceed to S43. In step S43, the foot microcomputer 33 waits for a data request command (see FIG. 7) to be transmitted from the PC 2, and when any command is received from the PC 2, the received command matches the data request command. After confirming this (step S44), the process proceeds to step S45. If the received command is not a data request command, the process returns to step S42. In step S45, the foot microcomputer 33 generates the data set 320 in FIG. 8A based on the saved content in step S26 in FIG. 11 and the saved content in step S34 in FIG. Is transmitted to the PC 2 in step S46, and the process returns to step S42.

  The acoustic flute can express a pitch within the range of 3 octaves, and the opening and closing states of the sound holes for generating each pitch are determined. The PC 2 stores the sound hole patterns corresponding to each pitch in advance, and outputs the sound of the corresponding pitch when the sound hole pattern of the electronic flute 1 matches the sound hole pattern corresponding to any pitch. To do. The sound hole pattern refers to a combination of open / closed states of the sound holes A to P. Accordingly, each sound hole pattern specifies whether each of the sound holes A to P is in an open state or a closed state.

  Further detailed structures or operations of the electronic wind instrument system SYS based on the above-described configuration and operation, or related techniques will be described in the following embodiments. As long as there is no contradiction, any two or more of the embodiments described below can be combined.

<< First Example >>
A first embodiment of the electronic wind instrument system SYS will be described. A method for specifying the pitch corresponding to the sound hole pattern of the electronic flute 1 based on the states of the sensors 22S and 32S will be described.

  A table 350 in FIG. 14 shows the relationship between the pitch of the output sound of the acoustic flute and the open / closed state of the sound holes A to P when the electronic flute 1 is used as an acoustic flute. In the table 350, bit data “0” is assigned to the closed state of the sound hole and the open state of the sound hole for each sound hole so as to correspond to the logical values of the output signals of the sensors 22S and 32S. Bit data “1” is assigned. FIG. 15 shows a part extracted from the table 350 in FIG. 14 (“reference numerical value” in FIG. 15 will be described later).

  In FIG. 14 and FIG. 15 and FIG. 16 described later, a sound number for making the table easy to see is assigned to each pitch. Corresponding pitches increase in the order of note numbers 0-26. The pitch that can be expressed by the acoustic flute includes a plurality of different pitches, and the sound hole patterns (and therefore the reference bit strings) for expressing the plurality of pitches are different from one another among the plurality of pitches. However, in the acoustic flute, there is a performance technique (also called a replacement finger; hereinafter referred to as a replacement finger) that expresses the same pitch with a fingering different from the basic fingering. Therefore, depending on the pitch, any one of a plurality of sound hole patterns can be used to express one pitch. For example, the pitch name “La” of the reference octave can be expressed by the sound hole pattern of the sound number 9 and the sound hole pattern of the sound number 28. Here, for simplification of explanation and illustration, attention is paid to only a part of the existing “replacement fingers” and the presence of the remaining “replacement fingers” is ignored.

  In the following, in order to distinguish bit data based on the output signals of the sensors 22S and 32S from the bit data based on the output signals of the sensors 22S and 32S when the electronic flute 1 is used as an acoustic flute as included in the table 350. This is called bit data. The table 350 includes a reference bit string for each pitch. In FIG. 15, a bit string 352 is a reference bit string corresponding to the pitch of the pitch name “do” of the standard octave, and a bit string 354 is a reference bit string corresponding to the pitch of the pitch name “do” one octave higher than the standard octave. is there. A reference bit string for a certain pitch is formed by arranging reference bit data in the open / closed state of the sound holes A to P corresponding to the pitch. In the reference bit string, the order starts from the sound hole A and ends at the sound hole P, that is, the sound holes A, B, C, D, E, F, G, H, I, J, K, L, M, N, O , P (hereinafter referred to as the standard order), the reference bit data of the sound holes A to P are arranged, and the reference bit data for the sound hole A is arranged in the least significant bit of the reference bit string.

For example, as illustrated in FIG. 15, the reference bit string 352 is “0000000000000000000”, and the reference bit string 354 is “00011111011111111”. A reference bit string expressed in binary notation for 16 bits is referred to as a reference value. At this time, coefficients 2 ⁰ to 2 ¹⁵ are assigned to the reference bit data of the sound holes A to P, respectively, to obtain reference numerical values. Then, the reference numerical value corresponding to the reference bit string 354 is “795” from “2 ¹² +2 ¹¹ +2 ¹⁰ +2 ⁹ +2 ⁷ +2 ⁶ +2 ⁵ +2 ⁴ +2 ³ +2 ² +2 ¹ +2 ⁰ = 7935”. The reference numerical value for the reference bit string 352 is “0”.

  By converting all the reference bit strings in the table 350 into reference numerical values and rearranging the obtained reference numerical values in ascending order (or descending order) while maintaining the correspondence between the sound numbers, pitches and reference bit strings and the reference numerical values, The table 360 of FIG. 16 is obtained. In the table 360, sound positions from 1 to 40 are defined. In the table 360, there are sound positions 1 to 40 corresponding to a plurality of pitches, and if the sound positions are different, the reference bit string is different, so that the total 40 reference numerical values corresponding to the sound positions 1 to 40 are different from each other. Therefore, if the sound hole pattern based on the actual fingering of the user is known, the pitch to be generated can be specified using the binary search.

  The PC 2 specifies the pitch to be generated using binary search or the like. FIG. 17 shows a schematic internal block diagram of the PC 2. PC2 is provided with each site | part referred by the codes | symbols 201-206. The USB processing unit 201 communicates with devices (including the foot microcomputer 33 and the switch 3) connected to the PC 2 with a cable compliant with the USB standard. The operation input unit 202 is a part that receives various operations from the user, and includes a keyboard and a pointing device. A CPU (Central Processing Unit) 203 controls the operation of each part in the PC 2 based on the input operation content of the operation input unit 202. The memory 204 includes a program memory that holds a program executed by the CPU 203 and a data memory that holds arbitrary data. The display screen 205 is a display device composed of a liquid crystal display panel or the like. The speaker 206 includes one or more speakers and outputs an arbitrary sound. The operation input unit 202, the display screen 205, and the speaker 206 may be connected to the outside of the PC 2, respectively.

  The memory 204 holds the table 360 of FIG. That is, a plurality of reference numerical values corresponding to a plurality of pitches (in other words, a total of 40 reference numerical values corresponding to the sound positions 1 to 40) are held in the memory 204. A plurality of reference bit strings corresponding to a plurality of pitches may be held in the memory 204, and the CPU 203 may derive each reference numerical value from each reference bit string.

The CPU 203 can transmit a data request command to the foot microcomputer 33 at an arbitrary timing. The data set 320 from the foot microcomputer 33 in response to the data request command includes a detection bit string in which bit data b _{A to} b _P indicating the open / closed states of the sound holes _A to _P are arranged (FIG. 8A ) And (b)). The CPU 203 derives a detected numerical value by digitizing the detected bit string based on the data set 320 in decimal notation, and uses a binary search (binary search) to select from a plurality of reference numerical values held in the memory 204. Search for the detection value.

  When there is a reference numerical value that matches the detected numerical value, the CPU 203 specifies the pitch corresponding to the reference numerical value that matches the detected numerical value as the target pitch, and outputs the sound of the target pitch using the speaker 206. When there is no reference numerical value that matches the detected numerical value, the CPU 203 does not output a sound based on the detected bit string. In addition, when outputting the sound of the target pitch from the speaker 206, the user does not need to breathe into the singer of the electronic flute 1.

  For example, let us consider a case in which the detection holes 22 and 32 detect a sound hole pattern that can generate the sound of the reference octave pitch “do” in the acoustic flute. In this case, data including a detection bit string as shown in FIG. 18 is transferred from the foot microcomputer 33 to the PC 2, and the CPU 203 derives a detection value “7935” from the detection bit string. The CPU 203 refers to the table 360 in the memory 204 and obtains the central position 20 of the positions 1 to 40 in the table 360. Since the reference numerical value “3127” corresponding to the position 20 is smaller than the detected numerical value “7935”, it is found that the detected numerical value “7935” does not exist in the positions 1 to 20. Subsequently, the CPU 203 obtains the central position 30 of the positions 21 to 40 where the detected numerical value “7935” may exist. Since the reference numerical value “8863” corresponding to the position 30 is larger than the detected numerical value “7935”, it is found that the detected numerical value “7935” does not exist in the positions 30 to 40. Subsequently, the CPU 203 obtains the central position 25 of the positions 21 to 29 where the detected numerical value “7935” may exist. Since the reference numerical value “7935” at the position 25 matches the detected numerical value “7935”, the CPU 203 sets the pitch name corresponding to the reference numerical value “7935”, that is, the pitch name “do” that is one octave higher than the reference octave to the target pitch. As specified.

  It should be noted that the use / non-use of the “finger” may be selected by the user using the operation input unit 202. When non-use of “replacement finger” is selected, only one basic sound hole pattern is assigned to one pitch. Actually, when non-use of “alternating finger” is selected, the above search may be performed after excluding the reference numerical values of the note numbers 27 to 39 (see FIG. 14).

  In order to produce sound with an acoustic flute, it is essential to breathe into the singer. It is said that it makes a loud sound at midnight, etc., but even if you try to make a small sound by weakening your breath, it is often difficult to confirm whether your fingering is correct due to the characteristics of the acoustic flute. It is. According to the electronic wind instrument system SYS according to the present embodiment, by performing an operation with a correct fingering on the electronic flute 1, a sound corresponding to the fingering can be generated at a desired volume without breathing in. At this time, by using the method according to the first embodiment, the pitch of the output sound (that is, the target pitch) is compared with the method of sequentially comparing the bit string obtained by the sensor with the bit string in the table 350 of FIG. ) Can be specified.

  In order to form the electronic flute 1 at a low cost, there is a desire to use a low-speed and inexpensive microcomputer as the body microcomputer 23 and the foot microcomputer 33. When such a microcomputer is used, if the microcomputers 23 and 33 perform complicated processing, there will be an unacceptably large delay from when the user operates the electronic flute 1 until the sound is actually output. Can occur. If a high-speed microcomputer is used to reduce such a delay, the power consumption and cost of the electronic flute 1 increase, and the microcomputers 23 and 33 may not enter the trunk tube 20 and the foot tube 30. . Therefore, in this method, the body microcomputer 23 and the foot microcomputer 33 are dedicated only to the sound hole state monitoring, and the PC2 side is assigned the function of specifying the target pitch. Thus, it is possible to form the electronic flute 1 and the electronic wind instrument system SYS simply by adding inexpensive components using a personal computer that is already widely used.

  Further, regarding the reading of the output signal of the sensor 22S or 32S, the time until sound generation is achieved by only reading the signal level high and low without using an A / D converter that requires time for A / D conversion. Shortening is achieved.

  In addition, audio data for each pitch may be stored in the memory 204. In this case, since a desired pronunciation can be obtained simply by reproducing the audio data corresponding to the target pitch, there is little delay from when the user operates the electronic flute 1 until the sound is actually output. If sound of acoustic flute is recorded to form sound data, sound close to the sound of acoustic flute can be output from speaker 206. Since the memory capacity of the PC 2 in recent years is considerably large, the memory burden of storing audio data in the memory 204 is small. However, the sound output from the speaker 206 may be formed using a MIDI sound source.

<< Second Example >>
A second embodiment of the electronic wind instrument system SYS will be described. In the second embodiment, display processing performed in combination with the first embodiment will be described. Although specifically described in the first embodiment, the operation of the PC 2 described in the first embodiment is realized by executing the target program held in the memory 204 by the CPU 203. When the target program is activated, the CPU 203 displays the reference image shown in FIG. 19 on the display screen 205 (see FIG. 17). Hereinafter, display refers to display on the display screen 205 unless otherwise specified.

  The reference image includes images 410, 420 and 430. The image 410 is a flute image including an image of the outer shape of the electronic flute 1 and an image of a key provided on the electronic flute 1. The image 420 is a score image including a staff score and a treble clef. Video 430 is a connection status notification video indicating whether or not electronic flute 1 is connected to PC 2. Hereinafter, the images 410 and 420 are particularly referred to as a reference flute image and a reference score image. Each key in the flute video image takes either a black state in which the inside of the key is painted black or a white state that is not. In the reference flute video, all keys are in the white state. A musical score video can be given a musical note video or a pitched video, but the reference musical score video does not have them.

  The target program operates in one of a plurality of operation modes, and an example of the content of the display screen 205 in the free performance mode is shown in FIG. In the free performance mode, the user freely operates each key of the electronic flute 1.

  For example, when the user gives an operation for outputting the sound of the reference octave pitch name “do” to the key of the electronic flute 1, the CPU 203 follows the method described in the first embodiment in accordance with the method described in the first embodiment. The target pitch corresponding to “do” is specified and the sound of the target pitch is output using the speaker 206, while the flute video 410a and the score video 420a corresponding to the target pitch are displayed. The output of the sound of the target pitch and the display of the flute video 410a and the score video 420a are performed until an operation for outputting the sound of the reference octave pitch name “do” is not given to the key of the electronic flute 1 (that is, the operation) (Until no detection bit string corresponding to is acquired).

  The flute image 410a is obtained by adding a key pattern (an operation state of a plurality of keys) for generating a sound of a target pitch in the acoustic flute to the reference flute image 410. That is, among the keys in the flute image 410a, the key that should be pressed to generate the sound of the target pitch (in FIG. 20, “Do” of the reference octave) is in the black state, and the key that should not be pressed is the white It is in a state (the same applies to other flute videos described later). The black ellipse at the left end of the flute image is an image of breath blowing into the singer. The score image 420a is formed by adding a note of the target pitch and a note name of the target pitch to the reference score image 420. The notation method of the pitch name is arbitrary. In FIG. 20, the pitch names in French notation and the pitch names in German notation are displayed in parallel (the same applies to FIG. 21 and the like described later).

  Since the flute image 410a and the score image 420a are displayed when the detected sound hole pattern corresponds to the pitch name “do” of the reference octave, the flute image 410a is the current operation state for the key of the electronic flute 1 The score image 420a is a score image corresponding to the operation state. The memory 204 holds a key pattern to be shown in the flute video and a note and a pitch name to be shown in the score video for each pitch, and the CPU 203 uses the held content to store the target pitch. Create and display flute video and score video according to pitch.

  If there is no reference numerical value that matches the detected numerical value, the CPU 203 does not output a sound and displays the reference image of FIG. 19 (that is, does not display a key pattern, a note, and a note name). Thereby, the user can recognize that the current fingering is not correct.

  Further, for example, when the user gives an operation for outputting the sharp sound of the reference octave pitch name “do” to the key of the electronic flute 1, the sharpness of the pitch name “do” and the pitch name “re” are changed. Since the flat represents the same sound, the CPU 203 may display the flute video 410b and the score video 420b shown in FIG. Similar to the flute image 410a, the flute image 410b is obtained by adding a key pattern (operation state of a plurality of keys) for generating the sound of the target pitch in the acoustic flute to the reference flute image 410. Similar to the score image 420a, the score image 420b is formed by adding a note and a note name of the target pitch to the reference score image 420. As a note and a note name, a sharp note of the note name “do” and A flat note and a note name of a note name and a note name “R” are given.

<< Third Example >>
A third embodiment of the electronic wind instrument system SYS will be described. The operation shown in the third embodiment can be performed particularly when the switch 3 is not connected to the PC 2, for example. In the acoustic flute, there is a performance technique that raises and lowers the output sound by one octave by changing the way of breathing while maintaining the same fingering. Correspondingly, in the system SYS, two pitches can be assigned to a common reference value (common sound hole pattern). Two pitches corresponding to a common reference value are called related pitches. For example, the pitch corresponding to the reference numerical value “1695” is a related pitch. Of the two related pitches corresponding to the reference numerical value “1695”, one is the sharpness of the pitch name “La” of the standard octave, and the other is the sharpness of the pitch name “La” that is one octave higher than the standard octave. In an acoustic flute, these two sounds can be switched and output in accordance with the above playing technique.

  The CPU 203 responds to the detected numerical value when the detected numerical value based on the detected bit string matches the reference value of the related pitch (for example, 1695), that is, when the target pitch specified according to the method described in the first embodiment is the related pitch. The two related pitches are regarded as two target pitches, and two sounds having two related pitches are simultaneously output from the speaker 206, and a flute video and a score video corresponding to the two related pitches are displayed.

  Therefore, when the detected numerical value “1695” is obtained, the CPU 203 uses the speaker 206 to determine the sharp sound of the pitch name “La” of the reference octave and the sharp sound of the pitch name “La” that is one octave higher than the reference octave. The sound is output simultaneously, while the flute video 410c and the score video 420c shown in FIG. 22 are displayed.

  The flute image 410c is obtained by adding to the reference flute image 410 a key pattern (operation state of a plurality of keys) for generating a sound of a target pitch (that is, a related pitch corresponding to the detected numerical value “1695”) in the acoustic flute. It is. The score image 420c is obtained by adding notes and pitch names of two related pitches corresponding to the detected numerical value “1695” to the reference score image 420. Similar to the example of FIG. 21, FIG. 22 also displays a flat note and pitch name of “S” that is equivalent to a sharp “L”.

<< 4th Example >>
A fourth embodiment of the electronic wind instrument system SYS will be described. In a case where the detected numerical value based on the detected bit string matches the reference value (for example, 1695) of the related pitch, the CPU 203 selects one of the two related pitches corresponding to the detected numerical value, and plays the sound having the selected related pitch. While outputting from the speaker 206, a flute image and a score image corresponding to the selected related pitch may be displayed (that is, the first and second embodiments with the selected related pitch being one target pitch). Sound output and display may be performed).

  The CPU 203 may execute the selection based on switch state data from the switch 3. That is, for example, in the above case, when the switch 3 is off, the lower one of the two related pitches corresponding to the detected numerical value is selected, and when the switch 3 is on, the higher one is selected. Select the related pitch. As a result, either one of two sounds having two related pitches is switched and output depending on whether or not a predetermined operation is input to the switch 3. The display method of the flute video and the score video according to the related pitch is the same as the display method of the flute video and the score video according to the target pitch.

<< 5th Example >>
A fifth embodiment of the electronic wind instrument system SYS will be described. An operation in the fingering confirmation mode among the plurality of operation modes in the target program will be described. FIG. 23 shows an example of display contents in the fingering confirmation mode. As shown in FIG. 23, in the fingering confirmation mode, the CPU 203 displays a slider bar 450 and a slider 451, and also displays a flute video 460 and a score video 470 corresponding to the position of the slider 451.

  The position of the slider 451 changes on the slider bar 450 in accordance with an operation on the operation input unit 202. The CPU 203 selects and determines a target pitch from the pitches in the table 360 based on the position of the slider 451, and displays a flute video 460 and a score video 470 corresponding to the target pitch. The display method of the flute video and the score video according to the target pitch is the same as the display method of the flute video and the score video according to the target pitch. In the example of FIG. 23, the target pitch is the note name “Le” that is one octave higher than the reference octave, and the user can freely change the target pitch through the operation input unit 202.

  In the fingering confirmation mode, the CPU 203 determines whether or not the detected numerical value based on the detected bit string matches the reference numerical value corresponding to the target pitch, and the detected numerical value matches the reference numerical value corresponding to the target pitch. The sound of the target pitch is output from the speaker 206, and if they do not match, the sound of the target pitch is not output. Therefore, while the user operates the electronic flute 1 with the fingering that is suitable for the flute video 460, the sound corresponding to the fingering continues to be output. By using the fingering confirmation mode, the user can confirm and practice fingering of a desired pitch.

<< Sixth Example >>
A sixth embodiment of the electronic wind instrument system SYS will be described. The operation in the fingering practice mode among the plurality of operation modes in the target program will be described. FIG. 24 shows an example of display contents in the fingering practice mode. Similarly to the fifth embodiment, in the fingering practice mode, the CPU 203 displays the flute video 460 and the score video 470 corresponding to the target pitch.

  However, in the fingering practice mode, the CPU 203 can randomly determine the target pitch and the note (note type). The CPU 203 can change the target pitch at a predetermined time interval, and the user can freely set the time interval by using the operation input unit 202 and specifying the item “tempo” in FIG. The designation of “tempo” consists of the designation of note type (full note or quarter note) and the designation of a numerical value, and the above time interval depends on the designation result. For example, in the case of “specifying a quarter note and specifying a numerical value of 100”, when the randomly determined note is a full note, the above-described case is described above, compared with the case where the randomly determined note is a quarter note. The time interval is quadrupled. On the right side of the score image 470, a prefetch scale 480 in which four scores are arranged in the horizontal direction is displayed. Each score in the look-ahead scale 480 is composed of a staff and a note. When the user designates a start button displayed on the display screen 205 (clicking with a mouse or the like), the operation in the fingering practice mode starts. When the operation in the fingering practice mode is started, each note in the prefetch scale 480 moves to the left at the time interval, and the leftmost note in the prefetch scale 480 becomes the note of the next target pitch. Thus, the pitches of the notes in the prefetch scale 480 are updated and set to the target pitch in order from the left, and the target pitches at that time are reflected in the flute video 460 and the score video 470.

  In the fingering practice mode, when the user operates the electronic flute 1 while looking at the display on the PC 2, the detected numerical values are sequentially obtained. The sound output presence / absence control according to the coincidence / non-coincidence between the detected numerical value and the reference numerical value corresponding to the target pitch is the same as that described in the fifth embodiment. When the user designates a stop button displayed on the display screen 205 (such as clicking with a mouse), the operation in the fingering practice mode is stopped. By using the fingering practice mode, the user can practice to operate the keys of the electronic flute 1 immediately after seeing the musical notes. It is also possible to display the percentage of coincidence / non-coincidence between the detected numerical value and the reference numerical value corresponding to the target pitch, or to display a pass / decision indication when the ratio reaches a certain value or more (for their display) Not shown). The user can arbitrarily specify the certain value.

  In the fingering practice mode, the target pitch may be determined based on a note data file prepared in advance. FIG. 25 shows an example of display contents in the fingering practice mode in this case. The note data file defines a plurality of notes and rests arranged in a time series forming the music, and when the fingering practice mode starts, the pitch of each note is sequentially adjusted to the tempo. Is updated to the target pitch.

<< Seventh Embodiment >>
A seventh embodiment of the electronic wind instrument system SYS will be described. In the seventh embodiment, a method and structure for creating the electronic flute 1 will be described.

  FIG. 26 is an exploded view showing the relationship between the trunk tube 20 and the trunk insertion unit 20U. The shaft 501 is a central axis in the longitudinal direction of the trunk tube 20. FIG. 27A is a partial cross-sectional view of the trunk tube 20 along the axis 501. FIG. 27B is a partial plan view of the trunk tube 20. As shown in FIG. 27A, the trunk tube 20 has a cylindrical and metal trunk main tube 500, and a plurality of sound holes are formed on the outer peripheral side surface of the trunk main tube 500. The axis of the cylinder as the shape of the trunk main pipe 500 is an axis 501. In FIGS. 27A and 27B, reference numeral 510 represents one sound hole formed in the trunk main pipe 500, and reference numeral 512 represents a metal and cylindrical protrusion that forms the sound hole 510. Part. The protruding portion 512 is joined to the trunk main pipe 500 so as to protrude in a direction away from the shaft 501 from the outer peripheral side surface of the trunk main pipe 500. The shaft 511 is a central axis of the cylinder as the shape of the protruding portion 512 and is orthogonal to the shaft 501. A hole surrounded by the protrusion 512 is a sound hole 510. A ring-shaped surface 514 corresponding to the shaded area in FIG. 27C represents an end surface of the protruding portion 512 located on the opposite side of the joint portion between the trunk main pipe 500 and the protruding portion 512. The trunk main pipe 500 and the protrusion 512 may be made of any material (wood, resin, etc.) that can form them.

  The sound hole 510 can be blocked by a key surface disposed above the sound hole 510. When the end surface 514 is in contact with the key surface, the sound hole 510 is closed and the state of the sound hole 510 is closed, and when the end surface 514 is not in contact with the key surface, the sound hole 510 is blocked. Instead, the sound hole 510 is in an open state.

  In addition to what is shown in FIG. 3, the unit 20U is provided with a substrate attachment material (support material) 26 shown in FIG. The board attachment material 26 is composed of a plurality of attachment materials that support the plurality of printed circuit boards 21e forming the trunk substrate 21. However, the board attachment material 26 may be a single member formed by integral molding. One or more sensors 22S are mounted on each printed circuit board 21e, and a total of 13 sensors 22S for the sound holes D to P are mounted on the whole of the plurality of printed circuit boards 21e (in FIG. 22S "). The sound holes D to P are not on the same plane, and the shafts 511 of the sound holes D to P are oriented in various directions. For each of the sound holes D to P, the surface of the sound hole (that is, the end surface 514 corresponding to the sound hole) is parallel to the surface of the printed board 21e on which the sensor 22S that detects the open / closed state of the sound hole is mounted. The substrate attachment material 26 is processed, and each printed circuit board 21e is attached to the substrate attachment material 26.

  The unit 20 </ b> U including the body substrate 21 and the substrate attachment material 26 is inserted into the hollow portion of the body tube 20 along the axis 501. The position of each sensor 22S on the substrate 21 is designed so that each sensor 22S is positioned directly below the corresponding sound hole (so that it is positioned on the shaft 511 of the corresponding sound hole), and the unit 20U is The tube 20 is inserted into the hollow portion.

  After the unit 20U is inserted into the trunk tube 20, unless the external force is applied to the unit 20U in particular, the state in which each sensor 22S is located immediately below the corresponding sound hole is maintained (the unit 20U is located in the trunk tube 20). The shape of the substrate mounting material 26 is determined. That is, a part or all of the outer peripheral surface of the substrate mounting member 26 is in close contact with the inner wall of the trunk tube 20 so that the above state is maintained.

  FIG. 28 is a plan view of the peripheral portion of the sound hole 510 as viewed from the direction orthogonal to the axes 501 and 511. In FIG. 28, the substrate 21, the sensor 22 </ b> S, and the substrate attachment material 26 arranged in the trunk tube 20 are clearly shown by partially showing the trunk main tube 500. Reference numeral 530 represents one key located above one sound hole 510. In response to a user operation, the bottom surface 532 of the key 530 approaches the end surface 514 and contacts the end surface 514 to close the corresponding sound hole 510, or away from the end surface 514, the corresponding sound hole 510. Open.

  An opaque shading plate (shading body) 534 is attached to the back surface 532 of each key 530 provided on the body tube 20. As shown in FIG. 29, the sensor 22S as an optical sensor is a photointerrupter provided with a light emitting element 551 made of a light emitting diode or the like and a light receiving element 552 made of a photodiode or the like, and a signal corresponding to the amount of light received by the light receiving element 552. Is output. When the light shielding plate 534 is not provided, the light generated by the light emitting element 551 reaches the light receiving element 552 via the optical path 553, but the optical path 553 can be blocked by the light shielding plate 534. That is, in the closed state of the sound hole 510 in which the bottom surface 532 of the key 530 contacts the end surface 514, the light shielding plate 534 is inserted into the optical path 553, the optical path 553 is blocked, and the light from the light emitting element 551 is received by the light receiving element 552. Since no light is received, a low level signal is output from the sensor 22S. When the bottom surface 532 of the key 530 is moved away from the end surface 514 and the sound hole 510 is opened, the light shielding plate 534 does not block the optical path 553, so that the light from the light emitting element 551 is received by the light receiving element 552, and the high level. A signal is output from the sensor 22S.

  Focusing on one sound hole provided in the trunk tube 20, the structure of the sound hole and the parts (including the key and sensor) corresponding to the sound hole have been described. This applies to the sound holes and the parts corresponding to the sound holes provided in the trunk tube 20 and the foot tube 30. Therefore, for each of the sound holes A to P provided in the body tube 20 and the foot tube 30, a light shielding plate (light shielding body) is provided on the back surface of the key located on the sound hole for each sound hole, and the detection block. Each optical sensor (22S, 32S) in 22 and 32 detects the open / close state of the corresponding sound hole based on whether or not the optical path in the optical sensor is blocked by the light shielding plate. Therefore, it is possible to detect the open / closed state of the sound hole without impairing the feeling of use of the key. A method of arranging a push switch or the like for mechanically detecting the vertical movement of the key on the back side of the key is also conceivable (see, for example, Japanese Patent Application Laid-Open No. 2010-060885). (Key usage varies between acoustic and electronic flutes). Although a method of using a photo reflector that emits light toward the back surface of the key and detects reflected light is also conceivable, there is a concern about malfunction due to the influence of external light.

  By the way, simply inserting the unit 20U into the hollow portion of the trunk tube 20 causes the unit 20U to rotate or shift within the trunk tube 20, and as a result, a correct detection result cannot be obtained from the sensor 22S. is there. The same applies to the foot tube 30 and the unit 30U. Considering this, the electronic flute 1 is provided with a fixing material for suppressing the rotation and displacement. At this time, a fixing material may be provided in each of the one or more sound holes in the trunk tube 20 and the one or more sound holes in the foot tube 30. With reference to FIG. 30, the fixing material 570 provided with respect to one sound hole 510 is demonstrated.

  The material of the fixing material 570 is arbitrary, and is formed from, for example, resin, metal, or wood. The fixing member 570 has a shape in which a part of the inner periphery of the cylindrical cylindrical body 571 is scraped off so as not to interfere with the light shielding plate 534 of FIG. A screw hole 572 is provided in the cylindrical body 571, and a screw hole 582 is also provided in the vicinity of the sensor 22 </ b> S in the substrate 21.

  After the fixing material 570 is arranged above the sound hole 510 so that the shaft of the cylinder as the shape of the cylindrical body 571 and the fixing material 570 and the shaft 511 (see FIG. 27A) just overlap, The fixing material 570 is inserted into the sound hole 510 until the back surface 573 (surface on the substrate 21 side) contacts the top surface of the substrate 21. With this insertion, the screw 590 passes through the screw holes 572 and 582 and is fitted with a nut or the like (not shown) fixed to the substrate 21 or the substrate attachment material 26, whereby the fixing material 570 and the substrate 21 are fitted. Are connected. The outer peripheral diameter of the cylinder as the shape of the cylindrical body 571 and the fixing member 570 is substantially the same as the diameter of the sound hole 510 (the inner diameter of the protruding portion 512). For this reason, the fixing member 570 is substantially fixed in the sound hole 510, and the positional relationship between each sound hole of the trunk tube 20 and the substrate 21 is fixed by the connection between the fixing member 570 and the substrate 21. Of course, the position of the screw hole 582 is determined so that the detection by the sensor 22S is correctly performed.

  The structure of the fixing member and the method of connecting the fixing member and the substrate have been described by paying attention to the fixing member 570 provided for the sound hole 510 of the trunk tube 20, but it is provided for the sound hole of the foot tube 30. The structure of the fixing material and the connecting method between the fixing material and the foot board 31 are the same. By the connection as described above, it is possible to prevent the substrate (21, 31) from rotating or shifting in the trunk tube 20 and the foot tube 30.

  The angle at which the protrusion 512 protrudes from the trunk main pipe 500 may be arbitrary (for example, 90 degrees, 60 degrees, or 120 degrees). Further, the surface 514 of the protrusion 512 may have an arbitrary shape (for example, a circle, an ellipse, or a polygon). Further, as long as the fixing material 570 is inscribed in the protruding portion 512, the fixing material 570 can be fixed in the protruding portion 512.

<< Eighth Example >>
An eighth embodiment of the electronic wind instrument system SYS will be described. In general, the acoustic flute is often divided and stored in a case for its own protection or easy to carry. The body tube and the foot tube are separable also in the electronic flute 1 so as to facilitate storage in the case.

  FIG. 31 is an exploded view of the electronic flute 1 around the joint portion between the trunk tube 20 and the foot tube 30. The connector 24 is a three-pole jack in which the first to third poles are concentrically arranged, and the connector 34 is a three-pole plug in which the first to third poles are concentrically arranged. For example, commercially available 3-pole stereo mini jacks and 3-pole stereo mini plugs can be used for the connectors 24 and 34, respectively.

  A DC voltage is supplied from the PC 2 to the foot board 31 via a USB cable between the foot board 31 and the PC 2, and the DC voltage is applied between the first and second poles in the connector 34. When the trunk tube 20 and the foot tube 30 are connected, the first to third poles of the connector 24 are connected to the first to third poles of the connector 34, respectively. As described above, the connectors 24 and 34 are mounted on the trunk substrate 21 and the foot substrate 31, respectively. Therefore, when the trunk tube 20 and the foot tube 30 are connected, a DC voltage from the PC 2 can be supplied as a drive voltage to the detection blocks 22 and 32 and the microcomputers 23 and 33. Serial communication between the microcomputers 23 and 33 is performed via the third poles of the connectors 24 and 34.

  The connector 24 is disposed on the central axis of the trunk tube 20 and the connector 34 is disposed on the central axis of the foot tube 30. Therefore, when connecting the trunk tube 20 and the foot tube 30, the trunk tube 20 or the foot tube 30 can be rotated around the central axis while maintaining the connection between the connectors 24 and 34. That is, the body tube and the foot tube can be connected and the attachment angle between them can be adjusted by the same assembling method as the acoustic flute, and the attachment work is easy to perform. If the plug is arranged on the foot tube 30 side, it is easier to reduce the amount of protrusion from the flute of the plug, but the connector 24 may be formed as a plug and the connector 34 may be formed as a jack.

<< Ninth Embodiment >>
A ninth embodiment of the electronic wind instrument system SYS will be described. An example of a method for coupling the substrate attachment material 26 and the substrate 21 will be described. In the ninth embodiment, it is assumed that the substrate mounting material 26 is a single component formed by integral molding. FIG. 32 is an exploded perspective view of a part of the substrate mounting material 26 and the substrate 21 according to the ninth embodiment. As described with reference to FIG. 26, the substrate 21 includes a plurality of substrates 21e. The board attachment material 26 has a processed cylindrical part 600, and the board attachment material 26 is provided on the cylindrical part 600 by providing a board attachment groove 601, an interference prevention groove 602, and a screw hole 603 for each board 21e. It is formed. A shaft 501 in FIG. 32 is the shaft 501 of the trunk tube 20 when the unit 20U including the substrate mounting material 26 is inserted and fixed to the trunk tube 20 (see also FIG. 26). (The same applies to FIG. 33 described later).

  Here, it is assumed that there are first and second acoustic flutes of different types as acoustic flute candidates for forming the electronic flute 1. It is assumed that the interval between adjacent sound holes is different between the first and second acoustic flutes. One or more board position markers are provided on the outer peripheral surface of the cylindrical component 600 by printing or the like. Here, it is assumed that at least substrate position markers 604 and 605 for the first and second acoustic flutes are attached to the cylindrical component 600. The sensor 22S is mounted on the surface of the substrate 21e.

  A method of attaching one substrate 21e to the substrate attachment material 26 will be described. First, the substrate 21e is fitted into the substrate mounting groove 601 so that the back end of the substrate 21e is in contact with the surface of the substrate mounting groove 601. In this state, the substrate 21 e can be moved on the groove 601 in the direction of the shaft 501. When the electronic flute 1 is formed using the first acoustic flute while utilizing the movement of the substrate 21e on the groove 601, the position of the end surface of the substrate 21e in the direction of the axis 501 is set as the position of the marker 604. When the electronic flute 1 is formed using the second acoustic flute, the position of the end face of the substrate 21e in the direction of the axis 501 is made to coincide with the position of the marker 605. In a state where this match is obtained, the screw 620 is inserted into the screw hole 603 through the hole LH provided in the substrate 21e, and the substrate 21e is fixed to the cylindrical component 600 using the screw 620. Thereby, even if the electronic flute 1 is assembled using either the first acoustic flute or the second acoustic flute, the shaft 511 of the corresponding sound hole is placed at the center of the sensor 22S (so that the markers 604 and 605 Position has been determined). That is, it is possible to detect a desired sound hole opening / closing state without depending on the shape of the acoustic flute regarding the sound hole position.

  The shape of the hole LH is determined so that the screw 620 passes through the hole LH even if the position of the substrate 21e is changed. For example, the shape of the hole LH is a rectangle having a long side parallel to the axis 501, an ellipse having a long axis in the direction of the axis 501, or a combination thereof. Since the interference prevention groove 602 having a necessary depth is provided in the direction toward the shaft 501 when viewed from the groove 601, a component mounted on the back surface of the substrate 21e does not interfere with the component 600. Further, since the groove 601 is formed in accordance with the size of the substrate 21e, the substrate 21e is not rotated by the rotation of the screw 620. The method for attaching the substrate 21e to the substrate attachment material 26 has been described with attention paid to one substrate 21e, but the same applies to the other substrates 21e. As shown in FIG. 32, a plurality of substrates 21e may be arranged on a surface orthogonal to the axis 501, and in this case, the same attachment method is applied to each substrate 21e. Further, the same method as described above for attaching the substrate to the substrate attachment material is also applied to the foot tube 30.

  By the way, since the electronic flute 1 is created by inserting the units 20U and 30U including the substrate and the substrate attachment material into the trunk tube 20 and the foot tube 30, the electronic flute 1 is naturally more than the original acoustic flute. The weight increases, and some users may feel heavy. Considering this, for example, if the depth of the interference prevention groove 602 is increased (for example, when the depth is increased from 3 mm to 10 mm from the standard), the weight of the electronic flute 1 is made closer to that of the acoustic flute. Can do.

  Also, as the weight increases, the weight balance of the electronic flute 1 may differ from that of the acoustic flute. The change in the weight balance can give the user a feeling of strangeness. Therefore, for example, the total length in the axial direction of the substrate attachment material (the substrate attachment material 26 in the body tube 20) is adjusted so that the weight balance of the electronic flute 1 approaches that of the acoustic flute (e.g., 10 mm longer or shorter). Alternatively, the depth of the interference prevention groove (interference prevention groove 602 in the body tube 20) is changed for each corresponding substrate (the depth is set to 5 mm for the interference prevention groove corresponding to a certain substrate, etc. The interference prevention groove corresponding to the substrate is changed to 10 mm or the like, or the axial length of the substrate (the substrate 21e in the body tube 20) is changed for each corresponding sound hole (the length or For example, the substrate corresponding to the sound hole may be 15 mm, and the substrate corresponding to the other sound hole may be 20 mm).

<< Tenth Embodiment >>
A tenth embodiment of the electronic wind instrument system SYS will be described. The tenth embodiment is an embodiment obtained by changing a part of the ninth embodiment. In the tenth embodiment, it is assumed that the board attachment material 26 is composed of a combination of a plurality of components. FIG. 33 is an exploded perspective view of a part of the substrate attachment material 26 and the substrate 21 (plurality of substrates 21e) according to the tenth embodiment. The board attachment member 26 according to the tenth embodiment is formed to include a plurality of board support parts and one or more connecting parts instead of the cylindrical part 600 of FIG. FIG. 33 shows substrate support components 600A and 600C included in a plurality of substrate support components, and shows a connection component 600B included in one or more connection components. That is, in the structure of FIG. 33, the cylindrical part 600 of FIG. 32 is divided into three parts 600A, 600B, and 600C. A certain substrate 21e is attached to the component 600A, and another substrate 21e is attached to the component 600C. Similarly to the example of FIG. 32, a plurality of substrates 21e may be arranged on a surface orthogonal to the axis 501, and in the example of FIG. 33, two substrates 21e are attached to the component 600C. Similarly to the cylindrical part 600, the parts 600A and 600C are also provided with grooves 601 and 602 and screw holes 603 for each board 21e. The method of attaching the board 21e to the parts 600A and 600C is described in the ninth embodiment. This is the same as the method for attaching the substrate 21e to the cylindrical component 600.

  The substrate mounting material 26 is formed by sandwiching the component 600B between the component 600A and the component 600C and bonding them using an adhesive or the like. A protrusion 641 is formed along the shaft 501 on the surface of the component 600A facing the component 600B, and a protrusion 643 is formed along the shaft 501 on the surface of the component 600C facing the component 600B. . On the other hand, the component 600B has a donut shape, and a through hole 642 with the shaft 501 as an axis is formed in the center of the component 600B. By fitting the protruding portions 641 and 643 of the components 600A and 600C into the through holes 642 of the component 600B, the relative positional relationship of the components 600A to 600C in the orthogonal direction of the shaft 501 is fixed.

  By the way, as described in the seventh embodiment, the plurality of sound holes are not on the same plane, and the shafts 511 of the plurality of sound holes face various directions. For convenience, the sound hole D is considered as a reference, and the angle formed by the two shafts 511 when the shaft 511 of the sound hole D and the shaft 511 of the sound hole E are projected on the orthogonal plane of the shaft 501 is defined as the sound hole. This is called the angle of E (the same applies to sound holes other than sound hole E). The angles of the sound holes EP can vary depending on the type of acoustic flute. Moreover, in acoustic flute, there exists what is called an inline or an offset of a key, and the angle of the sound holes EP can be changed by these.

  Linear angular markers 630A, 630B, and 630C parallel to the shaft 501 are provided on the outer peripheral surfaces of the components 600A, 600B, and 600C, respectively, by printing or the like. The markers 630A, 630B, and 630C are provided in accordance with the angle of the sound hole of the first acoustic flute. Therefore, when the electronic flute 1 is formed using the first acoustic flute, the protrusions 641 and 643 of the parts 600A and 600C are fitted into the through holes 642 of the part 600B so that the markers 630A, 630B and 630C form a straight line. In addition, after rotating any of the components 600A to 600C around the shaft 501 using any one of the components as a fulcrum, the components 600A to 600C are bonded and fixed. Thereby, the surface of the sound hole (that is, the end surface 514 corresponding to the sound hole; see FIGS. 27A and 28) is parallel to the surface of the substrate 21e on which the sensor 22S for detecting the open / closed state of the sound hole is mounted. Thus, desired sound hole open / closed state detection is realized.

  Angle markers 630A ', 630B', 630C '(not shown) matched to the angle of the sound holes of the second acoustic flute may also be provided on the outer peripheral surfaces of the components 600A, 600B, 600C. One or two of the angle markers for the second acoustic flute may coincide with the angle marker for the first acoustic flute. When forming the electronic flute 1 using the second acoustic flute, the protrusions 641 and 643 of the parts 600A and 600C are fitted into the through holes 642 of the part 600B, and the markers 630A ′, 630B ′ and 630C ′ are aligned. In order to achieve the above, after rotating one of the parts 600A to 600C around the shaft 501 using any part as a fulcrum, the parts 600A to 600C are bonded and fixed. As a result, even when the second acoustic flute is used, the surface of the sound hole (that is, the end surface 514 corresponding to the sound hole; see FIGS. 27A and 28) detects the open / closed state of the sound hole. Parallel to the surface of the substrate 21e on which 22S is mounted, the desired sound hole open / closed state detection is realized.

  As described above, when one set of angle markers (for example, a set of markers 630A to 630C) is provided on the substrate mounting member 26, accurate sound hole opening / closing state detection corresponding to one type of acoustic flute is performed. Is possible. If two or more sets of angle markers are provided on the substrate mounting member 26, it is possible to accurately detect the open / close state of the sound hole corresponding to two or more types of acoustic flutes. In this case, for each of the plurality of sets, it is convenient in terms of manufacturing if an identification marker indicating which set corresponds to which type of acoustic flute is also attached to the substrate attachment material 26.

  In the structure of FIG. 33, the measures described in the ninth embodiment can be taken against the increase in the weight of the electronic flute 1 and the change in the weight balance based on the acoustic flute. Further, in the structure of FIG. 33, for example, the material of the substrate support component (for example, 600A) for one substrate is changed to the substrate support component (for example, 600A) for another substrate so that the weight balance of the electronic flute 1 approaches that of the acoustic flute. It is also possible to make it different from the material of 600C). Specifically, for example, the components 600A and 600B may be formed of resin, while the component 600C may be formed of metal. Further, in the structure of FIG. 33, the component 600B can be omitted. Although the substrate attachment material for the trunk tube 20 has been described, the same technique can be applied to the foot tube 30 as well. Further, the techniques of the ninth and tenth embodiments can be combined. That is, for example, while the substrate mounting material 26 described in the ninth embodiment is used as a basis, a part of the substrate mounting material 26 is formed by a plurality of components (for example, components 600A, 600B, and 600C) as in the tenth embodiment. You may do it.

  In each of the above descriptions including the ninth and tenth embodiments, it is assumed that the cross-sectional shape of the trunk tube 20 is a circle, but if the cross-sectional shape of the trunk tube 20 is other than a circle, The shape of the substrate attachment material 26 may be determined in accordance with the cross-sectional shape (the same applies to the foot tube 30). In any case, if the substrate attachment material 26 can be inserted into the hollow portion of the trunk tube 20 (or if the substrate attachment material 26 is inscribed in the trunk tube 20), the cross section of the trunk tube 20. The shape may be arbitrary (circle, ellipse, polygon, etc.) (the same applies to the foot tube 30). The shape of the component 600 in FIG. 32 and the shapes of the components 600A to 600C in FIG. 33 may be determined in accordance with the cross-sectional shape of the trunk tube 20 (the same applies to the foot tube 30). For example, the component 600A or the component obtained by connecting the components 600A to 600C can be a conical component or a bell-shaped component.

<< Eleventh embodiment >>
An eleventh embodiment of the electronic wind instrument system SYS will be described. In the eleventh embodiment, several applied technologies or modified technologies for the above-described configuration and operation will be described.

  Reference is again made to FIG. Depending on the shape of the light shielding plate 534, the position of the sensor 22S, or the position of the sound hole, for example, a key 530 can be switched by 0.3 cm while the output logic value of the corresponding sensor 22S is switched, while the other keys 530 are It is possible that the output logical value of the corresponding sensor 22S will not be switched unless it is pressed 0.4 cm. Therefore, the length of the light shielding plate 534 may be adjusted for each key so that the pressing amount of the key 530 for switching the output logical value of the corresponding sensor 22S is common among all keys, or the shaft The arrangement position of the sensor 22S in the 511 direction may be adjusted (see FIG. 27A). The same adjustment is possible when there is a demand for the amount of pressing for a specific key to be larger or smaller than that of other keys. The same applies to the foot tube 30 in which the sensor 32S is disposed.

  In order to reduce the influence of the individual characteristic difference in the optical sensor, the body microcomputer 23 may perform the following first sensor adjustment process. In the form in which the first sensor adjustment process is used, it is assumed that the microcomputer 23 performs PWM control for causing each light emitting element 551 to emit light for (P × k) seconds during the P second period. (K is 0 or more and less than 1). Refer to FIG. In the first sensor adjustment process, the output voltage value of the light receiving element 552 that reflects the amount of light received by the light receiving element 552 is substituted for each sensor 22S using a predetermined initial value for the coefficient k. Based on the acquisition result of the first step so that the output voltage value of each sensor 22S is the same among the plurality of sensors 22S when the first step to be acquired and the optical path 553 is not blocked at all by the light shielding plate 534 A second step of adjusting the value of the coefficient k for the sensor 22S. Thereby, even if there is a characteristic individual difference, the output voltage value of the sensor 22S in the completely open state can be made common among the plurality of sensors 22S.

  Alternatively, the body microcomputer 23 may perform the following second sensor adjustment process. In the form in which the second sensor adjustment process is used, it is assumed that the microcomputer 23 can adjust the voltage applied to the light emitting element 551. The amount of light emitted from the light emitting element 551 increases or decreases as the voltage applied to the light emitting element 551 increases or decreases. In the second sensor adjustment process, the output voltage value of the light receiving element 552 reflecting the amount of light received by the light receiving element 552 is set to A / D for each sensor 22S in a state where the applied voltage of the light emitting element 551 is common among all the sensors 22S. The third step acquired using the converter and the third step so that the output voltage value of each sensor 22S is the same among the plurality of sensors 22S when the optical path 553 is not blocked by the light shielding plate 534 at all. And a fourth step of adjusting the applied voltage of the light emitting element 551 of each sensor 22S based on the acquisition result. Thereby, even if there is a characteristic individual difference, the output voltage value of the sensor 22S in the completely open state can be made common among the plurality of sensors 22S.

  The first or second sensor adjustment process can be performed when the electronic flute 1 is activated or can be performed periodically. When the output voltage value acquired in the first or third step is less than or equal to a predetermined value, it is determined that the corresponding sound hole is not completely open or in the closed state, and the first or third step. It is good to start over. The first or second sensor adjustment process can also be applied to the foot microcomputer 33 and the sensor 32S. Further, the output voltage value acquired in the first or third step may be set to be equal to or higher than the voltage at which the ports of the microcomputers 23 and 33 are determined to be at a high level. The port can be read at the high level / low level without using the, and the time until sound generation can be shortened.

  Further, the following method may be adopted in order to reduce the influence of the individual characteristic difference in the optical sensor (when this method is adopted, the applied voltage of the light emitting element 551 and the value of the coefficient k are set between all the sensors 22. In common). That is, the output voltage value of the light receiving element 552 when the optical path 553 is blocked by the light shielding plate 534 and the output voltage value of the light receiving element 552 when the optical path 553 is not blocked by the light shielding plate 534 are obtained for each sensor 22S. Is obtained in advance through an experiment, and based on the two output voltage values obtained for each sensor 22S, a boundary value between the low level and the high level of the output signal is determined for each sensor 22S and stored in the memory of the microcomputer 23. Store it. During actual operation of the electronic flute 1, for each sensor 22S, an open / closed state of each sound hole is determined by using an A / D converter to determine whether the output signal value of the sensor 22 is higher than the corresponding boundary value. Is detected. In actual operation, an intermediate value between the output voltage value of the sensor 22S when the optical path 553 is blocked and the output voltage value of the sensor 22S when the optical path 553 is not blocked becomes a boundary value. The initial value of the boundary value may be corrected. The same applies to the foot microcomputer 33 and the sensor 32S.

  The electronic flute 1 may include an amplifier and a speaker. When the PC 2 is not connected to the electronic flute 1, the sound that should have been output from the speaker 206 (see FIG. 17) may be output from the speaker built in the electronic flute 1. In this case, the functions of the CPU 203 and the memory 204 related to the sound output control need to be built in the electronic flute 1. Specifically, when the PC 2 is connected to the external terminal (USB terminal) 35 of the electronic flute 1, the amplifier and the speaker built in the electronic flute 1 are disabled in response to a connection request from the PC 2. As in each embodiment, sound is output and displayed on the PC 2. When a power supply device (AC adapter or the like) is connected to the external terminal 35 of the electronic flute 1, the sound and sound that should have been output from the speaker 206 (see FIG. 17) Can be output using.

Further, based on the bit data b _{D to} b _P of the sound holes _D to _P of the body tube 20, whether or not the open / close state of the sound holes _D to _P can be matched with any bit string in the table 360 (FIG. 16). Only when the open / close state of the sound holes _D to _P can be matched with any bit string in the table 360, the bit data b _{D to} b _P is transferred from the torso microcomputer 23 to the foot. You may make it transmit to the microcomputer 33. FIG. The foot microcomputer 33 reads the open / closed states of the sound holes A to C from the sensors 32S of the detection block 32 only when receiving the bit data b _{D to} b _P , and acquires the bit data b _{A to} b _C. The sound output presence / absence control based on the bit data b _{A to} b _P may be performed on the PC 2 side, or when the PC is not connected to the electronic flute 1 and the electronic flute 1 includes an amplifier and a speaker. The foot microcomputer 33 may perform this. When the bit data b _{D to} b _P cannot be matched with any bit string in the table 360 (that is, when the operation with the correct fingering is not performed), the body microcomputer 23 issues a sound generation stop command to the foot microcomputer. Send to 33. When the sound generation stop command is sent to the foot microcomputer 33, no sound is output from the speaker 206 and the speaker that can be incorporated in the electronic flute 1 regardless of the state of each sound hole of the foot tube 30.

<< Deformation, etc. >>
The embodiment of the present invention can be appropriately modified in various ways within the scope of the technical idea shown in the claims. The above embodiment is merely an example of the embodiment of the present invention, and the meaning of the term of the present invention or each constituent element is not limited to that described in the above embodiment. The specific numerical values shown in the above description are merely examples, and as a matter of course, they can be changed to various numerical values.

  The electronic device responsible for the function of the PC 2 described above may be any electronic device other than a personal computer (for example, an information terminal, a mobile phone, or a game device).

  An electronic wind instrument system according to one aspect of the present invention includes a tubular body (20, 30) provided with a plurality of sound holes and a plurality of keys for operating the opening and closing states of the plurality of sound holes, A detection unit (22, 32) for detecting an open / close state, and a detection bit string generation unit for generating a detection bit string in which bit data indicating the open / close state of the sound hole detected for each sound hole is arranged for the plurality of sound holes ( 23, 33), a reference numerical value holding unit (204) for holding a plurality of reference numerical values corresponding to a plurality of pitches, a numerical value of the detection bit string to derive a detection numerical value, and a binary search to calculate the plural A main processing unit (203) for searching for the detected numerical value among the reference numerical values.

  A flute as an example of a wind instrument having a tubular body may be a soprano flute, a bass flute, or an alto flute, and a wind instrument having a tubular body is any wind instrument other than the flute (such as a piccolo or an oboe). May be.

In each data handled by the electronic wind instrument system, the arrangement of the bit data b _{A to} b _P is not limited to the above, but is arbitrary. Of the bit data b _{A to} b _P , any bit data can be arranged in the most significant bit, and any other bit data can be arranged in the least significant bit. Therefore, of course, the above bit string can be inverted. In each bit data, the relationship between the value of “1” and the value of “0” may be reversed from that described above. In the above-described embodiment, the number of sound holes provided in the tube body is 16, but the number is not limited to 16 in the present invention.

  An electronic wind instrument A1 according to one aspect of the present invention includes a tubular body provided with a plurality of sound holes and a plurality of keys for operating the opening and closing states of the plurality of sound holes, and the opening and closing states of the plurality of sound holes. A detection unit including a plurality of sensors for detecting each sound hole, a substrate on which the detection unit is mounted, and an insertion unit having a support material to which the substrate is attached, and the insertion unit is hollow in the tube body An electronic wind instrument inserted in a section, wherein the substrate is composed of a plurality of element substrates including a first element substrate, and each element substrate is mounted with one or more sensors of the plurality of sensors, and the first element The support member is formed so that the substrate can move in the axial direction of the tubular body.

  In the above-described embodiment, the electronic flute 1 is exemplified as the electronic wind instrument. The electronic wind instrument A1 is embodied in the ninth embodiment. However, the technique of the ninth embodiment can also be applied to the tenth embodiment (therefore, the electronic wind instrument A1 can also be embodied in the tenth embodiment). Through the above movement, the arrangement position of the element substrate in the axial direction of the tube body can be changed, and a plurality of different tube bodies (for example, the above-described first and second acoustic flutes) can be handled. A support material may be formed so that only some of the element substrates can move in the axial direction of the tube body, or all of the element substrates may be in the axial direction of the tube body. A support material may be formed so as to be movable.

  In the electronic wind instrument A1, a plurality of markers indicating the arrangement position of the first element substrate on the support member in the axial direction may be provided on the support member.

  In the electronic wind instrument A1, there are a plurality of tube candidates including the first and second tube candidates as the tube candidates, and the marker is used when the first tube candidate is used as the tube. The 1st marker which shows the said arrangement position, and the 2nd marker which shows the said arrangement position when the said 2nd pipe body candidate is used as said pipe body may be included.

  A substrate 21e in FIG. 26 and the like is an example of an element substrate. In FIG. 32, each of the markers 604 and 605 indicates the arrangement position of the single substrate 21e shown on the right side of FIG. 32 on the substrate attachment material (support material) 26. The marker 604 indicates the arrangement position when the first acoustic flute (first tube candidate) is used as a tube, and the marker 605 uses the second acoustic flute (second tube candidate) as a tube. The above arrangement position is shown.

  An electronic wind instrument B1 according to an aspect of the present invention includes a tubular body provided with a plurality of sound holes and a plurality of keys for operating the opening and closing states of the plurality of sound holes, and the opening and closing states of the plurality of sound holes. A detection unit including a plurality of sensors for detecting each sound hole, a substrate on which the detection unit is mounted, and an insertion unit having a support material to which the substrate is attached, and the insertion unit is hollow in the tube body An electronic wind instrument inserted in a section, wherein the substrate is composed of a plurality of element substrates including first and second element substrates, and each element substrate is mounted with one or more sensors of the plurality of sensors, The support material is formed so that the angle formed by the component mounting surface of the first element substrate and the component mounting surface of the second element substrate can be changed.

  The electronic wind instrument B1 is embodied in the tenth embodiment. By making the angle changeable, it is possible to deal with a plurality of different types of tubular bodies (for example, the first and second acoustic flutes described above). The first element substrate and the second element substrate may be any two element substrates included in the plurality of element substrates. For example, the first element substrate is one substrate 21e shown on the right side of FIG. 33, and the second element substrate is any one of the two substrates 21e shown on the left side of FIG. It may be. The component mounting surface of the substrate 21e is a surface on which the sensor 22S is mounted, but the surface opposite to the surface can also be called a component mounting surface. There may be a plurality of sets of element substrates in which the angle can be changed. For example, the support member may be formed so that each element substrate can be individually rotated around the axis of the tube (that is, the axis 501 can be rotated as the rotation axis). The angle can be changed in the combination of the substrates.

  In the electronic wind instrument B1, a plurality of angle markers for designating the angle may be provided to the support material.

  In FIG. 33, since the substrate support components 600A and 600C are assembled so that the markers 630A and 630C are in a straight line (on one straight line), the substrate 21e attached to the component 600A and the substrate attached to the component 600C It can be said that the above-mentioned angle with respect to 21e is designated by the markers 630A and 630C as angle markers.

  In the electronic wind instrument B1, the support material includes a plurality of first substrate support components (for example, 600A) for mounting the first element substrate and second substrate support components (for example, 600C) for mounting the second element substrate. The support member is formed by connecting the plurality of substrate support components in the axial direction of the tubular body, and the second substrate support component is formed on the basis of the first substrate support component. The angle may be changed by rotating around the axis of the tube so that the second element substrate rotates around the axis with respect to the first element substrate.

  In the electronic wind instrument B1, there are a plurality of tube candidates including the first and second tube candidates as the tube candidates, and the angle marker uses the first tube candidate as the tube. A first angle marker for designating the angle when the second tube body candidate is used as the tube body, and a second angle marker for designating the angle when the second tube candidate is used as the tube body. May be.

  In the tenth embodiment, the first angle marker for the first acoustic flute (first tube candidate) includes the markers 630A and 630C, or the markers 630A, 630B and 630C, and the second acoustic flute (second tube). The second angle markers for (candidate) include markers 630A ′ and 630C ′ or markers 630A ′, 630B ′ and 630C ′.

  An electronic wind instrument C1 according to one aspect of the present invention includes a tube body provided with a plurality of sound holes and a plurality of keys for operating the plurality of sound holes to be opened and closed, and the opening and closing states of the plurality of sound holes. A detection unit including a plurality of sensors for detecting each sound hole, a substrate on which the detection unit is mounted, and an insertion unit having a support material to which the substrate is attached, and the insertion unit is hollow in the tube body An electronic wind instrument inserted in a portion, wherein the substrate is composed of a plurality of element substrates, each element substrate is mounted with one or more sensors of the plurality of sensors, and in all or part of the support material, Two or more element substrates are mounted on the same plane orthogonal to the axis of the tube.

  The electronic wind instrument C1 is embodied in the ninth and tenth embodiments. In the left side portion of the board mounting material 26 in FIG. 32 or the component 630C in the board mounting material 26 in FIG. 33, there are two boards 21e on the same plane orthogonal to the shaft 501. In the right portion of the board mounting material 26 in FIG. 32 or the component 630A in the board mounting material 26 in FIG. 33, there is only one board 21e on the same plane orthogonal to the axis 501. Therefore, in the example of FIGS. 32 and 33, two or more element substrates are attached on the same plane orthogonal to the axis 501 of the tube body only in a part of the substrate attachment material (support material) 26. However, the substrate attachment material 26 may be deformed so that two or more element substrates are attached to the same surface orthogonal to the axis 501 in the entire substrate attachment material 26.

  In any electronic wind instrument system and any electronic wind instrument, the tube may be formed of two or more tubes such as the trunk tube 20 and the foot tube 30, or one tube that cannot be separated. It may be. When the tube body is formed of two or more tubes, as many insertion units as the number of tubes can be prepared. The axis of the tube corresponds to the central axis of the cylinder viewed as the outer shape of the tube. An electronic wind instrument and an electronic wind instrument system may be formed by combining the techniques of the electronic wind instruments A1, B1, and C1.

1 Electronic flute 2 Personal computer (PC)
3 Switch 10 Head tube 20 Body tube 21 Body substrate 22 Body detection block 23 Microcomputer (body microcomputer)
30 foot tube 31 foot substrate 32 foot detection block 33 microcomputer (foot microcomputer)
A to P, 510 Sound hole 530 Key 534 Shading plate

Claims (8)

A tube provided with a plurality of sound holes and a plurality of keys for operating the opening and closing states of the plurality of sound holes;
A detection unit for detecting the open / closed state of each sound hole;
A detection bit string generation unit that generates a detection bit string in which bit data indicating the open / closed state detected for each sound hole is arranged for the plurality of sound holes;
A reference value holding unit for holding a plurality of reference values corresponding to a plurality of pitches;
A main processing unit for deriving a detection numerical value by digitizing the detection bit string and searching for the detection numerical value from the plurality of reference numerical values using a binary search,
The main processing unit outputs a sound having a pitch corresponding to a reference numerical value that matches the detected numerical value when a reference numerical value that matches the detected numerical value exists. For each predetermined pitch included in the plurality of pitches, a reference bit string is formed by arranging bit data of the open / closed state of the sound holes corresponding to the predetermined pitch for the plurality of sound holes, and the reference bit string is a numerical value. The electronic wind instrument system according to claim 1, wherein a reference numerical value corresponding to the predetermined pitch is derived by converting into the electronic wind instrument system. The detection unit and the detection bit string generation unit are housed in the tube,
3. The electronic wind instrument system according to claim 1, wherein the reference numerical value holding unit and the main processing unit are provided in an electronic device located outside the tubular body. 4. The main processing unit
When there is a reference numerical value that matches the detected numerical value, the pitch corresponding to the reference numerical value that matches the detected numerical value is specified as the target pitch, and the sound of the target pitch is output, and the plurality of the corresponding numerical values The key operation status and the note of the target pitch are displayed,
The electronic wind instrument system according to any one of claims 1 to 3, wherein when there is no reference numerical value that matches the detected numerical value, the sound output, the operation state, and the note are not displayed. The plurality of pitches include two related pitches corresponding to a common reference value and different from each other,
The said main process part outputs two sounds with the said 2 related pitch simultaneously, when the said detected numerical value corresponds with the said common reference numerical value, The Claim 1 characterized by the above-mentioned. Electronic wind instrument system. The plurality of pitches include two related pitches corresponding to a common reference value and different from each other,
The electronic wind instrument system further includes an operation body that receives an input of a predetermined operation,
When the detected numerical value matches the common reference numerical value, the main processing unit switches between the two sounds having the two related pitches depending on whether or not the predetermined operation is input to the operating body. The electronic wind instrument system according to claim 1, wherein the electronic wind instrument system is output. Each sound hole is in a closed state or an open state depending on whether the sound hole is blocked by the surface of the key located on the sound hole,
The detection unit is composed of a plurality of optical sensors that detect the open / closed state of the sound hole for each sound hole, and a light shielding body is provided on the surface of the key located on the sound hole for each sound hole,
The electronic device according to claim 1, wherein each optical sensor detects an open / closed state of a corresponding sound hole based on whether or not an optical path in the optical sensor is blocked by the light shielding body. Wind instrument system. A substrate on which the detection unit and the detection bit string generation unit are mounted and a support material to which the substrate is attached are inserted into the hollow portion of the tubular body,
The electronic wind instrument system further includes a fixing material inserted into one or more sound holes in the plurality of sound holes, and the position of each sound hole and the substrate by connecting the fixing material and the substrate. The electronic wind instrument system according to claim 1, wherein a relationship is defined.

Images