JP4419966B2 - Electronic wind instrument and program thereof - Google Patents

Description

  The present invention relates to an electronic wind instrument that electronically reproduces the wind sound of a natural wind instrument.

As is well known, an electronic wind instrument has both a lip plate and a performance key simulating a natural wind instrument, and is a combination of pressing a performance key when exhalation is blown from the lip of the lip plate. The pitch is specified according to the fingering, and the sound of the sound corresponding to the expiratory pressure at the mouth is synthesized and emitted at that pitch.
Here, octave switching is one of the playing methods peculiar to natural wind instruments. Octave switching fixed the fingering by subtly changing the movement of the lower lip that infuses exhalation called "Ambusher" in instruments like flute that do not have a unique performance key to switch octaves It means a performance method that controls the octave of the sound of the wind. It is also called “over blow” or “lip slur”.
Patent Document 1 discloses an electronic wind instrument that can accurately detect octave switching. The electronic wind instrument disclosed in this document detects the direction of exhalation of breath through a plurality of expiratory pressure detection sensors discretely installed in the mouth. Then, after specifying the current octave according to the detected direction, the sound source is instructed to output a musical sound signal having a pitch according to the octave.
Japanese Patent Application Laid-Open No. 07-199919

By the way, a natural wind instrument player who mainly plays music such as jazz may use a technique called “pitch bend” in which the pitch is finely adjusted by slightly rotating the tube toward itself. In addition to the octave switching, it has been desired to realize an electronic wind instrument that faithfully reproduces the performance operability of this pitch bend.
The inventors have carefully observed how natural wind instruments are played to realize such an electronic wind instrument, and when octave switching is performed, the contact pressure on the lip plate by the lower lip of the performer increases, Moreover, when pitch bend was performed, the causal relationship that the distance between the lip of a wind blower and the lip of a lip plate became small was acquired. Based on the results, the inventors installed a distance sensor that detects the distance to the lips and a pressure sensor that detects the contact pressure on the electronic wind instrument, and changes the pitch of the sound that outputs the detection contents of both sensors from the sound source. I came up with the idea of trying to make it work together. In other words, when the distance detected by the distance sensor is closer than the threshold, the sound output from the sound source is pitch-bended, and when the contact pressure detected by the pressure sensor is greater than the threshold, the pitch of the sound is increased octave. is there.

However, it is often the case that the blower unconsciously presses the lower lip strongly against the lip plate even if he intends to slightly rotate the tube toward his side to fine-tune the pitch. In that case, in a configuration that simply detects both octave switching and Bitch bend performance using a distance sensor and a pressure sensor, not only the detection value of the distance sensor but also the detection value of the pressure sensor exceeds the threshold value. There is a possibility that a sound of an octave-up pitch that is different from the original intention of the blower may be output from the sound source.
The present invention has been devised under such a background, and provides an electronic wind instrument that can accurately detect both the octave-up and pitch bend performance methods of a natural wind instrument and reproduce the performance operability in a realistic manner. The purpose is to do.

  An electronic wind instrument according to a preferred embodiment of the present invention includes a lip plate having a member to be brought into contact with the lower lip of the player and a lip, a performance operator having a plurality of keys, and a contact pressure of the lower lip against the member. A first detecting means for detecting and sequentially generating a pressure value indicating the detected contact pressure; and a second detecting means for detecting a distance from the lip to the lip of the blower and sequentially generating a distance value indicating the detected distance. A memory for storing each pair of pitches of the sound to be output from the sound source when the pressure value exceeds and falls below the first threshold value, in association with each combination of key presses, A pressure value generated by the first detection means and a first threshold value among both pitches that form a pair stored in the memory in association with a key combination of the performance operator pressed by a finger of a person Specified based on the result of comparing Output control means for outputting the sound of the pitch from the sound source, and the pressure value generated by the first detection means and the distance value generated by the second detection means is not smaller than the second threshold value Pitch change control means for changing the pitch of the sound output from the sound source to the other pitch of the paired pitches when the value transits across the first threshold value.

  In this aspect, the output control means supplies a message to the sound source to start the output of the one pitch sound, and the pitch change control means instructs to stop the output of the sound output from the sound source. And a message for instructing the start of output of the sound of the other pitch may be supplied to the sound source.

  Each of the pitch pairs stored in the memory may be a pitch pair having a pitch difference of one octave.

  When the generated distance value is smaller than the second threshold, the pitch change control means may supply a message to the sound source instructing a pitch bend down of a bend amount corresponding to the distance value. .

  In addition, the first detection means superimposes the surfaces of the upper electrode sheet and the lower electrode sheet having electrodes on each surface with a pressure-sensitive conductor interposed therebetween, and the back surface of the lower electrode sheet is placed on the lip plate. The membrane switch adhered to the surface, the member that contacts the lower lip is configured such that one end of the membrane switch is positioned against the lip plate at a position where the upper electrode sheet of the membrane switch can be pushed down toward the lower electrode sheet. An actuator that is swingably connected in the vertical direction may be used.

  According to another preferred embodiment of the present invention, a program includes a lip plate having a member to be brought into contact with the lower lip of the blower and a lip, a performance operator having a plurality of keys, and a contact pressure of the lower lip against the member. First detecting means for sequentially generating a pressure value indicating the detected contact pressure, and detecting a distance from the lip to the lip of the blower, and sequentially generating a distance value indicating the detected distance. Each pair of key depressions, each pair of sound pitches to be output from the sound source when the pressure value generated by the first detection means exceeds and falls below the first threshold. Among the pitches that form a pair stored in the memory in association with a combination of keys of the performance operator pressed by a finger of a wind performer on an electronic wind instrument comprising a memory stored in association with Generated by the first detection means The output control process for outputting the sound of one pitch specified from the result of comparing the pressure value and the first threshold value from the sound source, and the distance value generated in the second detection process is the second threshold value. When the pressure value generated in the first detection process transits across the first threshold value, the pitch of the sound output from the sound source is the difference between the two pitches forming the pair. A pitch change control process for changing to the other pitch is executed.

  According to the present invention, it is possible to provide an electronic wind instrument that can accurately detect both the octave-up and pitch bend performance methods of a natural wind instrument and reproduce the performance operability in a realistic manner.

(Embodiment of the Invention)
An embodiment of the present invention will be described.
The electronic flute according to the present embodiment has the following two features.
The first feature is the octave switching function that controls the octave switching of the pitch of the musical sound that is output from the sound source according to the fingering of the blower according to the contact pressure to the lip plate of the lower lip of the blower, and the output. It is equipped with a pitch bend down function for controlling the pitch bend down of a musical tone according to the distance between the performer's lips and the mouth.
The second feature is that the octave switching function is locked while the pitch bend down function is in operation, so that the octave up of the tone pitch is not performed.

  FIG. 1 is a view showing an appearance of an electronic flute 1 according to the present embodiment. As shown in the figure, the casing of the electronic flute 1 includes a head tube portion 10, a main tube portion 20, and a foot tube portion 30. The main pipe section 20 and the foot pipe section 30 have a performance key 40 that is an operation element that accepts an operation with a finger of a blower, and the head pipe section 10 has a lip plate 50 that is an operation element that accepts an operation with a lip. Is provided. Further, the lip plate 50 is provided with a shed 51, a contact pressure detection unit 70, and a distance detection unit 80.

FIG. 2 is a cross-sectional view showing details of the configuration of the lip plate 50. As shown in the figure, a recess having a substantially L-shaped cross section is formed in the base portion on the front side of the shed 51, and a contact pressure detection unit 70 including an actuator 71, foam rubber 72, and a membrane switch 73 is provided. Contained.
As shown in FIG. 3, the membrane switch 73 has an upper electrode sheet 73a and a lower electrode sheet 73b having electrodes on each surface, and the surfaces of the membrane switch 73 sandwich the membrane spacer 73c and the pressure-sensitive conductive rubber 73d. Overlapping. And the back surface of the lower electrode sheet 73b is bonded to the longitudinal surface of the recess.

  In FIG. 2, the actuator 71 is a member having a tapered shape that tapers from the upper surface to the lower surface, and the rear end of the upper surface is connected to the upper end of the short surface of the recess so as to be swingable in the vertical direction. . Further, the front end of the upper surface of the actuator 71 is slightly raised upward to form a substantially straight projection 74, and a substantially rectangular foam rubber 72 is attached to the lower surface. The actuator 71 transmits the contact force received from the lower lip of the blower to the membrane switch 73 through its own swing. As will be described later, the octave switching of the pitch of the musical sound output from the sound source is controlled according to the detection content of the contact pressure detection unit 70.

  On the other hand, a distance detector 80 is erected in the back of the mouth 51 of the lip plate 50. The distance detection unit 80 is configured by fixing the distance sensor 81 to the upper part on the back side of the shed 51 via a support column 82. The distance sensor 81 is an infrared light emitting element that irradiates an infrared beam in the direction of the mouth 51, a light receiving element that receives a beam reflected by a light shielding object in the irradiation direction, and an electric power proportional to the amount of light received by the light receiving element. An infrared reflector configuration including a variable resistor that reduces resistance is formed. As will be described later, the pitch bend down of the musical sound output from the sound source is controlled in accordance with the detection content of the distance detection unit 80.

The driving principles of the contact pressure detector 70 and the distance detector 80 will be described with reference to FIGS.
As shown in FIG. 4A, the player who plays the electronic flute 1 brings his / her lower lip into contact with the protrusion 74 of the actuator 71 and blows into the mouth 51. As is well known, the pressure-sensitive conductive rubber 73d has a property that the more it is compressed, the smaller the electric resistance in the compression direction. Since the connecting portion of the actuator 71 and the lip plate 50 is urged upward with a weak force, the lower lip of the blower is not in contact with the projection 74 of the actuator 71 or with a relatively weak force. In this state, the electric resistance of the pressure-sensitive conductive rubber 73d becomes infinite, and the voltage between both contacts of the upper electrode sheet 73a and the lower electrode sheet 73b is maximized. When the blower performs the octave switching to increase the pitch by an octave, the actuator 71 is pushed down strongly with his lower lip as shown in FIG. 4B, so that the electric resistance of the pressure-sensitive conductive rubber 73d gradually increases. It becomes low and the voltage between both contacts falls. Therefore, the threshold value of the contact pressure calculated according to the voltage applied between the two contacts of the pressure-sensitive conductive rubber 73d is preferably set, and it is referred to whether or not the contact pressure has shifted across the threshold value. For example, the timing of octave switching can be specified precisely.

  Further, while the blower is not performing the pitch bend down, a sufficient distance is secured between the lip of the blower and the buttock 51, and the electric resistance of the variable resistor of the distance sensor 81 becomes infinite and is applied to the resistance. The maximum voltage is maximum. When the blower rotates the tube to bend the pitch, the lips approach the shed 51 as shown in FIG. 4C, and the electric resistance of the variable resistance of the distance sensor 81 gradually decreases. To go. Therefore, the pitch bend down timing can be determined by suitably setting a distance threshold that is determined according to the voltage applied to the variable resistor of the distance sensor 81 and referring to whether or not the distance has shifted across the threshold. Can be specified precisely. Furthermore, when the distance between the lips and the distance sensor 81 is closer than the threshold, the pitch bend down bend amount may be increased in accordance with the distance approached.

  FIG. 5 is a diagram showing an electrical configuration of the electronic flute 1. In the figure, since the elements provided on the housing have already been described with reference to FIG. 1 and the like, the same reference numerals are assigned and the description thereof is omitted. In addition to the membrane switch 73 and the distance sensor 81, the electronic flute 1 includes a breath sensor 91, a key sensor 92, an analog / digital (hereinafter referred to as “A / D”) converter 93, a distance / bend converter 94, and a CPU 95. RAM 96, ROM 97, sound source 98, and sound system 99.

When the function of each part shown in the figure is outlined, first, the breath sensor 91 detects the pressure value of exhaled breath that is blown into the mouth port 51 provided on the lip plate 50 of the head tube part 10, and indicates the detected pressure value. The signal is supplied to the A / D converter 93.
The key sensor 92 individually detects whether or not each performance key 40 provided from the main pipe section 20 to the foot pipe section 30 is pressed, and supplies a signal indicating the pressed state of each key to the A / D conversion section 93.

  The A / D converter 93 A / D converts the signal supplied from the breath sensor 91 and supplies it to the CPU 95 as expiratory pressure data, and A / D converts the signal supplied from the key sensor 92, and presses key data. To the CPU 95. The A / D converter 93 A / D converts the voltage value applied between both the upper electrode sheet 73a and the lower electrode sheet 73b of the membrane switch 73 and supplies it to the CPU 95 as contact pressure data. At the same time, the voltage value applied to the variable resistor of the distance sensor 81 is A / D converted and supplied to the distance / bend converter 94 as distance data.

  The distance / bend conversion unit 94 converts the distance data supplied from the A / D conversion unit 93 into bend data, and supplies the bend data obtained by the conversion to the CPU 95. The bend data is data representing the pitch amount to be bent down as a relative value within a preset pitch width (hereinafter, this pitch width is referred to as “bend range”). In the present embodiment, the width corresponding to one semitone is set as a bend range, and the bend data represents the pitch amount to be pitch bend down within the bend range with a resolution of 100 steps. Accordingly, the pitch bend data takes a value of “0 to −100”, and the lower limit value “−100” represents that the pitch should be lowered by one semitone (100 cents).

  Here, a procedure for converting distance data into bend data will be described. The distance / bend converter 94 that has received the distance data from the A / D converter 93 determines whether the distance indicated by the distance data is greater than a preset distance threshold. When it is determined that the distance is greater than the distance threshold, bend data of “0” is supplied to the CPU 95 regardless of the size. On the other hand, when it is determined that the distance indicated by the distance data is smaller than the distance threshold, the difference between the distance indicated by the distance data and the distance threshold is obtained. Then, a relative value obtained by comparing the difference between the minimum distance value 0 and the distance threshold value is obtained by linear interpolation, and the obtained value is supplied to the CPU 95 as bend data. As a result, when the distance indicated by the distance data becomes smaller than the distance threshold, the value of the bend data also decreases in proportion to the difference exceeding the distance threshold, and the distance between the distance sensor 81 and the lip of the player The bend data reaches “−100” which is the lower limit value when the value becomes “0” which is the minimum value.

The ROM 97 stores a fingering table 97a and a sound source control program 97b.
FIG. 6 is a data structure diagram of the fingering table 97a. As shown in the figure, this table has three fields of “fingering”, “first octave”, and “second octave”.
In the “fingering” field, pressed key data indicating a pressed key combination is stored. In the “first octave” field, pitch data indicating the pitch of a musical sound to be output when a standard unbusher is played is stored. In the “second octave” field, pitch data indicating a pitch one octave higher than that stored in the “first octave” field is stored.

  In FIG. 5, a sound source control program 97b is a program that gives the CPU 95 the functions characteristic of the present embodiment. The CPU 95 that executes this program stores an expiratory pressure data area (hereinafter referred to as “expired air pressure data storage area”), an area for storing pressed key data (hereinafter referred to as “pressed key data storage area”), An area for storing contact pressure data (hereinafter referred to as “contact pressure data storage area”) and an area for storing bend data (hereinafter referred to as “bend data storage area”) are secured in the RAM 96, and Processing characteristic of this embodiment is performed while data is sequentially rewritten with various data supplied from the A / D conversion unit 93 and the distance / bend conversion unit 94. Details of the processing will be described later.

  The sound source 98 is a well-known MIDI (Musical Instruments Digital Interface) sound source 98, outputs a musical sound signal synthesized in accordance with various MIDI messages supplied from the CPU 95 to the sound system 99, and stops the output. The sound system 99 emits a sound corresponding to the musical sound signal.

FIG. 7 is a flowchart showing the processing of this embodiment.
The series of processing shown in the figure is sequentially executed in synchronization with a clock signal generated by a system clock (not shown), and the CPU 95 stores the contact pressure data written in the contact pressure data storage area at a certain clock timing. Processing is started after a unique area for buffering (hereinafter referred to as “buffering area”) is secured in the RAM 96.
In the figure, the CPU 95 determines whether the expiratory pressure data stored in the expiratory pressure data storage area has exceeded a preset expiratory pressure threshold (S100).

  In step 100, when determining that the expiratory pressure data has exceeded the expiratory pressure threshold, the CPU 95 stores the contact pressure data stored in the contact pressure data storage area in the buffering area (S110). That is, in this step, the contact pressure data stored in the contact pressure data storage area at the immediately preceding clock timing is written to the buffering area. Of course, the stored contents of the contact pressure data storage area itself are sequentially rewritten by the contact pressure data supplied from the A / D converter 93 thereafter.

  The CPU 95 reads the pitch data specified according to the combination of the pressed key data stored in the pressed key data storage area and the contact pressure data buffered in the buffering area from the fingering table 97a (S120). Specifically, the pitch data is read in the following procedure. First, a record in which the same pressed key data as that stored in the pressed key data storage area is stored in the “fingering” field is specified from the fingering table 97a. Subsequently, it is determined whether the contact pressure data buffered in the buffering area is below or above a preset contact pressure threshold. Then, if the contact pressure data is below the contact pressure threshold, the pitch data is read from the “first octave” field of the specified record, while if it exceeds, the pitch data is read from the “second octave” field.

  Subsequently, the CPU 95 supplies a note-on message for instructing sound generation at the pitch represented by the pitch data read in step 120 to the sound source 98 (S130). More specifically, a MIDI message including a status byte indicating a note-on message and a data byte indicating a key code corresponding to the pitch data read in step 120 is supplied to the sound source 98. The sound source 98 that has received the message starts to output to the sound system 99 the tone signal synthesized in accordance with the message. As a result, a musical tone having a pitch specified by the note-on message is emitted from the sound system 99.

Subsequently, the CPU 95 determines whether the expiratory pressure data stored in the expiratory pressure data storage area has fallen below the expiratory pressure threshold (S140).
When determining in step 140 that the expiratory pressure data has fallen below the expiratory pressure threshold value, the CPU 95 supplies a note-off message instructing mute to the sound source 98 (S150). Specifically, a MIDI message including a status byte indicating that it is a note-off message is supplied to the sound source 98. The sound source 98 that has received the message stops outputting the musical sound signal to the sound system 99. Thereby, sound emission by the sound system 99 is stopped and the process returns to step 100. When the pressure value represented by the expiratory pressure data again exceeds the expiratory pressure threshold value, the subsequent processing is repeated.

When it is determined in step 140 that the expiratory pressure data is not below the expiratory pressure threshold, the CPU 95 proceeds to the next step while outputting a musical sound signal without supplying a note-off message.
Subsequently, the CPU 95 determines whether or not the bend data stored in the bend data storage area is smaller than 0 (S160).

  When it is determined in step 160 that the bend data is smaller than 0, the CPU 95 supplies a pitch bend message instructing pitch bend down of the bend amount indicated by the bend data to the sound source 98, and then returns to step 140 (S170). Specifically, a MIDI message including a status byte describing that it is a pitch bend message and a data byte describing bend data as a bend amount parameter is supplied to the sound source 98. The sound source 98 that has received the message lowers the pitch of the musical sound signal output to the sound system 99 in accordance with the message. For example, when the bend data written in the data byte of the message is “−10”, the pitch of the musical sound signal output so far is changed to a pitch lower by 10 cents.

  When determining in step 160 that the distance is not smaller than 0, the CPU 95 stores the contact pressure data stored in the contact pressure data storage area in the buffering area (S180). That is, in this step, the contact pressure data that has been in the buffering area so far is replaced with new contact pressure data stored in the contact pressure data storage area at the immediately preceding clock timing. On the other hand, when it is determined in step 160 that the bend data is smaller than 0, this step 180 is skipped, so the stored content of the buffering area is not updated, and the contact pressure data stored in step 110 remains unchanged. Continue to the next step.

  Subsequently, the CPU 95 determines whether or not the stored content of the pressed key data storage area has been rewritten with the pressed key data newly supplied from the A / D converter 93 (S190). If the brass player changes his / her fingering, the determination result of this step is “Yes”, and if not changed, the determination result of this step is “No”.

If it is determined in step 190 that the stored content of the pressed key data storage area has been rewritten, the process returns to step 120 to read another pitch data corresponding to the changed fingering, and in step 130, the pitch data is read. A note-on message instructing sound generation at a pitch indicated by is supplied to the sound source 98. On the other hand, when it is determined that the storage area of the pressed key data storage area has been rewritten, the process proceeds to the next step without returning to step 120.
The CPU 95 determines whether or not the contact pressure data in the buffering area has changed across the contact pressure threshold (S200). If the blower is switching the octave with the fingering fixed, the contact pressure data that has exceeded the contact pressure threshold in step 110 is less than the threshold in step 170, or the contact that has fallen below the contact pressure threshold in step 110 Since the pressure data exceeds the threshold value in Step 170, the determination result in Step 200 is “Yes”. Otherwise, the determination result is “No”.
When it is determined in step 200 that the contact pressure data has changed across the contact pressure threshold, the process returns to step 120 to read another pitch data having a pitch difference of 1 octave, and the pitch data is indicated in the following step 130. A note-on message instructing pronunciation at the pitch is supplied to the sound source 98. On the other hand, if there is no change across the contact pressure threshold, the process returns to step 140.

  In the electronic flute 1 according to the embodiment described above, each pair of pitch data having an octave difference is tabulated for each combination of the performance keys 40 to be pressed, and to the lip plate 50 on the lower lip of the performer. A tone signal having a pitch indicated by one pitch data specified based on the result of comparing the contact pressure and the threshold value is output from the sound source 98. The contact pressure data indicating the contact pressure to the lip plate 50 is buffered in a buffering area provided in the RAM 96, and the stored content of the area is determined by the distance between the lip 51 of the lip plate 50 and the lip of the blower. It is updated only while it is not smaller than the threshold value, and the octave switching is not performed when the blower enters the pitch bend down operation and the distance between the buttock 51 and the lips becomes short. For this reason, even if the blower rotates the tube to his / her side with the intention of pitch bend down and the lower lip is strongly pressed against the lip plate 50, the pitch of the musical tone is increased by an octave. The performance operability closer to an acoustic flute can be realized.

(Other embodiments)
This embodiment can be modified in various ways.
In the above embodiment, the performance operability of the flute, which is one of the woodwind instruments, is realized by the electronic wind instrument. However, the present invention is applied to other wind instruments in which the octave is changed by the unbusher while the fingering is fixed. Also good.
In the above embodiment, the bend range set in the distance / bend conversion unit 94 is 100 cents, but a wider bend range or a narrow bend range may be set.
In the above embodiment, the pitch of the musical sound signal output from the sound source 98 is changed by the pitch bend message, but the pitch may be changed by another message such as a control change.

  In the above embodiment, the actuator 71 that is a member that receives the contact of the lower lip of the blower on the lip plate 50 has a shape having the substantially linear protrusion 74 at the front end of the upper surface. You may comprise by another shape. In addition, the actuator 71 is connected to the upper end of the short surface of the L-shaped recess of the lip plate 50 so that the rear end of the actuator 71 can swing in the vertical direction. You may let them. In short, if one end of the actuator 71 is connected at a position where the upper electrode sheet 73a of the membrane switch 73 can be pushed down toward the lower electrode sheet 73b, the positional relationship between the actuator 71 and the membrane switch 73 and the connecting method of both are as follows. It doesn't matter.

  In the above embodiment, the electronic flute 1 itself has the sound source 98 and the sound system 99 built in, but an interface for connecting to the external sound source 98 is provided in the electronic flute 1 and a sound source 98 control signal is output through this interface. Thus, the external sound source 98 may be controlled.

It is an external view of the electronic flute concerning this embodiment. It is sectional drawing of a lip plate. It is a block diagram of a membrane switch. It is a drive principle figure of a contact pressure detection part and a distance detection part. It is an electrical block diagram of an electronic flute. It is a data structure figure of a fingering table. It is a flowchart which shows the process of embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Head pipe part, 20 ... Main pipe part, 30 ... Foot pipe part, 40 ... Key for performance, 50 ... Lip plate, 51 ... Mouth opening, 70 ... Contact pressure detection part, 71 ... Actuator, 72 ... Foam rubber, 73 DESCRIPTION OF SYMBOLS ... Membrane switch, 80 ... Distance detection part, 81 ... Distance sensor, 82 ... Support pillar, 91 ... Breath sensor, 92 ... Key sensor, 93 ... A / D conversion part, 94 ... Distance / bend conversion part, 95 ... CPU, 96 ... RAM, 97 ... ROM, 98 ... sound source, 99 ... sound system

Claims (6)

A lip plate having a member to be brought into contact with the lower lip of the performer and a lip;
A performance operator having a plurality of keys;
First detection means for detecting a contact pressure of the lower lip with respect to the member and sequentially generating a pressure value indicating the detected contact pressure;
A second detecting means for detecting a distance from the buttock to the lip of the blower and sequentially generating a distance value indicating the detected distance;
A memory that stores each pair of pitches of the sound to be output from the sound source when the pressure value is above and below the first threshold, in association with each combination of key presses;
A pressure value generated by the first detection means and a first threshold value among both pitches that form a pair stored in the memory in association with a combination of the keys of the performance operator pressed by the finger of the blower. Output control means for outputting the sound of one pitch specified based on the result of the comparison from the sound source,
When the distance value generated by the second detection means is not smaller than the second threshold value and the pressure value generated by the first detection means transits across the first threshold value, the sound source An electronic wind instrument comprising: pitch change control means for changing the pitch of the sound output from the sound to the other of the pitches of the pair. The electronic wind instrument according to claim 1,
The output control means includes
Supplying a message to the sound source instructing the start of output of the one pitch sound;
The pitch change control means includes
An electronic wind instrument that supplies, to a sound source, a message for instructing to stop outputting the sound output from the sound source and a message for instructing to start outputting the sound at the other pitch. The electronic wind instrument according to claim 1 or 2,
Each pair of pitches stored in the memory is
An electronic wind instrument that is a pair of pitches with a pitch difference of one octave. In the electronic wind instrument of Claim 1 thru | or 3,
The pitch change control means includes
An electronic wind instrument that, when the generated distance value becomes smaller than a second threshold value, supplies a sound source with a message instructing pitch bend down by a bend amount corresponding to the distance value. The electronic wind instrument according to claim 1 to 4,
The first detection means includes
A membrane switch in which the surfaces of the upper electrode sheet and the lower electrode sheet having electrodes on each surface are overlapped with a pressure-sensitive conductor interposed therebetween, and the back surface of the lower electrode sheet is adhered to the surface of the lip plate. ,
The member in contact with the lower lip is
An electronic wind instrument, which is an actuator having one end thereof connected to the lip plate so as to be swingable in the vertical direction at a position where the upper electrode sheet of the membrane switch can be pushed down toward the lower electrode sheet. A lip plate having a member to be brought into contact with the lower lip of the performer and a lip, a performance operator having a plurality of keys, and a contact pressure of the lower lip against the member, and a pressure value indicating the detected contact pressure First detection means for sequentially generating, second detection means for detecting a distance from the buttock to the lip of the blower, and sequentially generating a distance value indicating the detected distance, and the first detection means An electronic wind instrument comprising: a memory that stores each pair of pitches of sounds to be output from the sound source when the pressure value to be generated exceeds and falls below the first threshold value, in association with each combination of key presses In addition,
A distance value generated by the first detection means and a first threshold value among both pitches that form a pair stored in the memory in association with a combination of keys of the performance operator pressed by a finger of a wind performer Output control processing to output the sound of one pitch specified based on the result of comparing with the sound source,
When the distance value generated in the second detection process is not smaller than the second threshold and the pressure value generated in the first detection process transits across the first threshold, A program for executing a pitch change control process for changing the pitch of the sound output from the sound source to the other pitch of the paired pitches.

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