JP3883270B2 - Automatic performance device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an automatic performance apparatus that sequentially transmits performance information including musical tone control information to a sound source side corresponding to the performance position of a song.
[0002]
[Prior art]
The musical tone control information in the performance information is information other than the sound generation instruction information (note-on) and the mute instruction information (note-off). Specifically, the information and tone color for controlling the volume of the generated musical sound. , Tempo information for controlling the performance tempo, and the like.
[0003]
The automatic performance device (sequencer) has a repeat playback function that repeatedly plays an arbitrary section of a song, and a skip playback function that jumps a song being played from one arbitrary point to another arbitrary point. Yes. FIG. 12 illustrates volume control when performing with the skip playback function. In FIG. 12, α, β, and γ are musical tone control information for controlling the volume, and specifically, for example,
α: Set the volume to “50”
β: Set the volume to “20”
γ: Set the volume to “80”
It is assumed that the volume control information. Performance information including this musical tone control information is sent from the automatic performance device to the sound source side, and the music is automatically played while the sound volume is controlled on the sound source side. During this automatic performance, the position of the song progresses sequentially, and when it reaches the position of P (α), volume control information (hereinafter simply referred to as volume information) α is output. " When the position P (β) is reached, the volume information β is output, and the volume value is “20” thereafter. The same applies to the volume information γ.
[0004]
[Problems to be solved by the invention]
When performing a performance as described above with a conventional automatic performance device, there are the following problems.
(Skip playback case) The performance progresses and the position of the song is at position P._APosition P when_BWhen jumping to position P_AFrom position P_BIf you did nothing with the volume information when jumping to_BThe volume of the tone that is subsequently generated remains at the volume value “50” based on the volume information α received at the position P (α). However, originally, the position P_BSince the sound volume value at “80” is “80”, the original sound volume value and the actual sound volume are different. Therefore, position P_AFrom position P_BWhen jumping to position P_AThe volume information representing the original volume value “80” in is separately sent.
[0005]
(Loop playback case) The performance progresses and the position of the song is at position P._BPosition P when_AWhen jumping to position P_BFrom position P_AIf you did nothing with the volume information when jumping to_AThe volume of the musical sound that is subsequently generated remains the volume value “80” based on the control information γ received at the position P (γ). However, originally, the position P_ASince the sound volume value at “50” is “50”, the original sound volume value and the actual sound volume are different. Therefore, position P_BFrom position P_AWhen jumping to position P_AThe volume information representing the original volume value “50” in is separately sent.
[0006]
Thus, conventionally, musical tone control information representing the original control value at the jump destination is separately sent so that the control value matches even if the performance position jumps in the middle. As described above, conventionally, processing for sending musical tone control information is performed every time a jump as described above occurs, but such processing is wasted in the following cases, for example.
(1) In FIG._AControl value and position P_BAre equal to each other (for example, the volume of the volume information γ is set to “50”).
(2) In FIG._AAnd position P_BWhen there is no new musical tone control information between (i.e., when there is no change in the control value in that section).
[0007]
Even in such a case, if the tone control information is output, for example, a sound source that receives the tone control information and changes the volume value or the like takes some time for setting the volume. In the above example, there is described a case where there is only one type of musical sound control information. However, when there are actually several or a dozen types of musical tone control information, the time required for setting them cannot be ignored. In addition, in an automatic performance apparatus that handles a plurality of parts simultaneously, there are several to dozens of types of musical tone control information for each part, and the number of musical tone control information to be output becomes enormous.
[0008]
In addition, there is a similar problem, but there is a conventional automatic performance device that can start performance from an arbitrary position. When a performance is started by such an automatic performance device, first, musical tone control information for instructing a control value at the start position is searched for on the automatic performance device side and transmitted to the sound source, and the control value is set on the sound source side. , I'm matching it. However, if the control value based on the musical tone control information sent to the sound source last before starting the performance is equal to the control value at the start position, it is not necessary to send the musical tone control information again at the start of the performance. When such wasteful tone control information is transmitted, the same problem as described above occurs.
[0009]
The present invention has been made in view of the above-described problems, and an object of the present invention is to eliminate useless processing of a sound source side device by eliminating useless transmission of musical tone control information.
[0010]
[Means and Actions for Solving the Problems]
In order to solve the above-described problems, an automatic performance device according to the present invention is, as one form, an automatic performance device that sequentially sends performance information including musical tone control information corresponding to the performance position of a song to the sound source side. Jump means for jumping the performance position from the first position to the second position;The musical tone control information detecting means for detecting the last musical tone control information before the performance position by searching from the performance information, and detected by the musical tone control information detecting means.The first positionLast in the pastMusic control information and, Detected by the musical tone control information detecting meansThe second positionLast in the pastDetermining means for determining whether or not the musical sound control information is equal; and when the determination means determines that both of the musical sound control information are not equal, the second position on the sound source side when jumping to the second positionLast in the pastWhen musical tone control information is transmitted and it is determined by the determining means that both the musical tone control information are equal, the second position on the sound source side is jumped to the second position.Last in the pastAnd control means for controlling not to send the musical tone control information. According to the automatic performance device, when the performance position is jumped from the first position to the second position by the jump means, the first position is determined when the determination means jumps to the second position.Last in the pastMusical sound control information and the second positionLast in the pastIt is determined whether or not the musical tone control information is equal, and when it is determined that both of the musical tone control information are not equal, the second position on the sound source side when the control means jumps to the second position.Last in the pastMusical tone control information information is sent out, but when the determination means determines that both the musical tone control information are equal, the control means jumps to the second position and the second position on the sound source side.Last in the pastSince the control is performed so as not to send the musical tone control information, in this case, the sound source side does not need to perform extra processing.
[0011]
The automatic performance device according to the present invention, as another form, is an automatic performance device that sequentially sends performance information including musical tone control information corresponding to the performance position of a song to the sound source side, which is held in advance by the sound source side. Recognizing means for recognizing the musical tone control information, starting means for starting the performance of the song from an arbitrary starting position,The musical tone control information detecting means for detecting the last musical tone control information before the start position of the performance by searching from the performance information, and detected by the musical tone control information detecting means.The starting positionLast in the pastMusic control information and,Determining means for determining whether or not the musical tone control information recognized by the recognizing means is equal; and when the determining means determines that both of the musical tone control information are not equal, the start to the sound source side at the start of the performance positionLast in the pastWhen the musical tone control information is transmitted and it is determined by the determination means that both the musical tone control information are equal, the start position is placed on the sound source side at the start of the performance.Last in the pastAnd control means for controlling not to send the musical tone control information. According to this automatic performance device, the recognition means for recognizing the performance control information used at the start of the music performance held in advance by the sound source side, and the determination means when the performance of the music is started from an arbitrary start position by the start means. The start position at the start of the performanceLast in the pastIt is determined whether or not the musical tone control information is equal to the musical tone control information recognized by the recognition means, and when it is determined that both musical tone control information are not equal, the control means starts the start on the sound source side when the performance starts. positionLast in the pastMusical tone control information is sent out, but when it is judged by the judging means that both the musical tone control information are equal, the control means gives the start position to the sound source side at the start of the performance.Last in the pastSince the control is performed so as not to send the musical tone control information, in this case, the sound source side does not need to perform extra processing.
  Note that the above tone control information is constituted by a predetermined numerical value, and if the difference between the values of both the tone control information is within a predetermined threshold value, the determination means controls both tone controls. It can be configured that it is determined that the information values are equal, and in other cases, the values of both musical tone control information are not equal.
[0012]
[0013]
There are various ways of recognizing the musical tone control information held in advance on the sound source side, and examples thereof include the following. By determining a default value to be sent at the end of the performance and always sending this default value to the sound source side at the end of the music performance, it can be recognized that the sound source holds the default value at the start of the performance. Further, a storage means for storing the musical tone control information sent to the sound source side is provided, and every time the musical tone control information is sent, the musical tone control information is stored in the storage means by being updated and stored. Can be recognized as musical tone control information on the sound source side.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a performance system including an automatic performance apparatus as an embodiment of the present invention. In FIG. 1, the automatic performance device includes a CPU, a RAM 2, a ROM 3, a tempo clock source 4, an operator group 5, a display 6, and a sound source 7. In addition, a sound system that generates a musical tone signal from the sound source 7 includes an amplifier 8 and a speaker 9. The sound source 7 may be provided separately as an integral part of the automatic performance device, or may be provided at a remote location connected via a communication line, for example.
[0015]
The function of each component is as follows.
CPU1: The apparatus is controlled based on a program on the ROM3.
RAM2: Performance data, various variables used in the processing of the CPU1, flags, etc. are stored.
Tempo clock source 4: The CPU 1 generates a tempo clock interrupt at the tempo instructed by the CPU 1. This tempo clock is used as a basic clock for automatic performance, and is generated at a timing obtained by dividing a quarter note into 24 equal parts.
Operator group 5: It consists of an operator for instructing performance start and performance stop, an operator for designating a repeat performance section and repeat performance start, and an operator for designating a performance start position. These will be described in detail later.
Indicator 6: Current performance position P during performance_CrWhen the performance is stopped, the performance start position is displayed.
Sound source 7: Receives musical tone information from the CPU 1, sounds a musical tone at a designated pitch according to note information in the musical tone information, and mutes a musical tone at a designated pitch. Further, the volume of the sound source 7 is set in accordance with the tone control information from the CPU 1 (volume information in this embodiment), and the subsequent tone is pronounced at this volume.
[0016]
FIG. 2 shows a detailed configuration of the operator group 5 on the panel. As described above, the display 6 displays the current performance position or performance start position. The function of each operator is as follows.
Performance start switch 51: An operator for starting performance from a designated performance start position.
Repeat performance start switch 52: An operator for starting repeat performance of a specified repeat section.
Performance stop switch 53: an operator for stopping performance.
Repeat section designation [A / B] switches 54, 55: When a normal performance that is not a repeat performance is being performed, pressing the music piece at a desired timing causes the position of the music corresponding to that timing to be at position P._A, Position P_BIs set as memory. When performing a repeat performance, the set position P_AAnd position P_BThe section determined by is repeatedly played.
Performance start position designation [-/ +] switches 56, 57: When the performance is stopped, the "+" switch 57 indicates the performance start position displayed on the display 6 in units of one measure, for example. By using the “−” switch 56, it is possible to sequentially change in the direction of performance.
[0017]
FIG. 3 shows a format of performance data stored in the RAM 2. The performance data includes timing data, type data, and note number / volume value data. The contents of each data are as follows.
Timing data: Timing at which note information or volume information is sent to the sound source, and is indicated by the number of clocks from the beginning of the performance data.
Type data: Note information (note-on information / note-off information) or volume information.
Note number / volume value data: indicates a note number if the type data is note information, and a volume value if the type data is volume information.
FIG. 4 shows a specific example of performance data. The types are [Note ON] for note-on information, [Note OFF] for note-off information, and [Volume] for volume information. Along with the performance data, the song length L representing the song length_SE(Unit: clock) is stored.
[0018]
The operation of the embodiment apparatus will be described below with reference to the flowcharts of FIGS. 5 to 7 are flowcharts of a main routine executed by the CPU 1. Hereinafter, the main routine will be described. When the embodiment apparatus is activated, initial setting is first performed (step S1). In this initial setting, the following variables and flags are initialized. In addition, a predetermined tempo is set in the tempo clock source 4 and the default sound volume value V for the sound source 7 is set as a default._DfSet.
〔flag〕
Performance flag F_Py: A flag indicating whether or not normal automatic performance is being performed, and is displayed as “on” during performance. The initial value is “off”. Repeat performance flag F_Rp: This flag indicates whether or not a repeat performance is being performed, and is displayed as “on” during a repeat performance.
[0019]
[Variables such as position]
Current position P_Cr: The position of the currently playing song, expressed as the number of clocks when the beginning of the song is 0. The initial value is 0.
Repeat start position P_RS: Start position (clock) of repeat performance, and initial value is set to “0”.
Repeat end position P_RE: Repeat play end position (clock), initial value is song length L_SESet to
A position P_A: Repeat section designation [A] The position of the song set by the switch 54.
B position P_B: Repeat section designation [B] The position of the song set by the switch 55.
Song length L_SE: The length of the song, which is indicated by the end position (clock) of the song.
Shift length L_Ms: The shift length when shifting the start position of the music piece by a predetermined amount by pressing the [-] [+] switches 56, 57. In this embodiment, the number of clocks for 1 bar is set.
[0020]
[Volume variable]
Current volume value V_Cr: Current position P_CrThe volume value at.
Repeat start volume value V_RS: Repeat start position P_RSThe initial value is the default volume value V_DfSet to Default volume value V_Df
Repeat end volume value V_RE: Repeat end position P_REThe initial value is the default volume value V_DfSet to
A position volume value V_A: A position P_AThe volume value at.
B position volume value V_B: Volume value at the B position PB.
Default volume value V_Df: Volume value for default (predetermined volume value)
[0021]
When the initial setting is completed, it is checked whether or not the performance start switch 51 on the panel is pressed (step S2). If it is pressed, the repeat performance flag F is checked._RpIs set to “off” (step S3), and then the normal automatic performance state is entered. On the other hand, if the performance start switch 51 has not been pressed (step S2), it is next checked whether or not the repeat performance start switch 52 has been pressed (step S4). If it has been pressed, the repeat performance flag F is checked._RpIs set to “on” and the current position P_CrRepeat start position P_RSAfter that, enter the repeat performance mode.
[0022]
If neither the performance start switch 51 nor the repeat performance start switch 52 is pressed (steps S2 and S4), the automatic performance device is not performing, and in this state, the performance start position displayed on the display 6 is displayed. The performance start position can be changed and set by the performance start position designation [-/ +] switches 56 and 57. Therefore, first, it is checked whether or not the performance start position designation [-] switch 56 has been pressed (step S6)._CrShift length L from (= performance start position)_Ms(Step S7), the performance start position is shifted in the direction opposite to the performance progression by the shift length L._MsMove by (= 1 measure). When the performance start position designation [-] switch 56 is not depressed (step S6), it is further checked whether or not the performance start position designation [+] switch 57 is depressed (step S8). , Current position P_CrShift length L_Ms(Step S9), the performance start position shifts in the performance progression direction L_MsMove by (= 1 measure). And the current position P after these movements_Cr(= Performance start position) is displayed (step S10), and the processing after step S2 is repeated.
[0023]
On the other hand, if the performance start switch 51 or the repeat performance start switch 52 has been pressed, the processing after step S11 is performed to perform normal automatic performance or repeat performance. First, the current position P of the song_CrWhen starting performance from the current position P_CrVolume value at (= current volume value V_Cr) To detect a volume value detection routine (step S11) and a volume information transmission routine 1 (step S12) to transmit volume information of the volume value._PyIs set to “on” (step S13). These steps S11 and S12 will be described in detail later.
[0024]
Next, repeat performance flag F_RpFrom this state, it is determined whether the current performance is a repeat performance or a normal automatic performance (step S14). Repeat performance flag F_RpIs “on”, that is, during the repeat performance, it is monitored whether or not the performance stop switch 53 is depressed (step S24), and the repeat performance state is continued until it is depressed. When the performance stop switch 53 is pressed, the performance flag F_PyIs set to “off” (step S25), the sound being silenced is processed (step S26), and the default volume value V is set._DfIs sent to the sound source 7, the sound source 7 is set to the default sound volume (step S27), the repeat performance is terminated, and the process returns to step S2.
[0025]
Repeat performance flag F_RpIs “off”, that is, during normal automatic performance (step S14), normal automatic performance is performed, and repeat interval designation [A / B] switches 54 and 55 are used to indicate the repeat interval during this automatic performance. Setting is possible. That is, it is determined whether or not the repeat section designation [A / B] switches 54 and 55 are pressed (steps S15 and S18). If neither is pressed, the above-described steps S24 and subsequent steps are executed automatically. Perform. In this case, the automatic performance state continues until the performance stop switch 53 is pressed, as in the case of repeat performance.
[0026]
On the other hand, if one of the repeat section designation [A / B] switches 54 and 55 is pressed, the repeat section is set / changed. That is, first, it is determined whether or not the repeat section designation [A] switch 54 has been pressed (step S15), and if it has been pressed, the current position P of the song at the time of pressing._CrAnd the above-described volume value detection routine is executed to determine the current position P_CrCurrent volume value V corresponding to_Cr(Step S16), and the acquired current position P_CrA position P_ACurrent volume value V_CrA position volume value V_A(Step S17). If the repeat section designation [A] switch 54 is not depressed (step S15), it is further determined whether or not the repeat section designation [B] switch 55 is depressed (step S18). The current position P of the song at the time_CrAnd the above-described volume value detection routine is executed to determine the current position P_CrCurrent volume value V corresponding to_Cr(Step S19), and the acquired current position P_CrB position P_BCurrent volume value V_CrB position volume value V_B(Step S20).
[0027]
After this, A position P_AAnd B position P_BIs examined (step S21). In accordance with the result, various variables corresponding to the start point and end point of the repeat section are set. It is not determined which one of the repeat section designation [A] switch 54 and the repeat section designation [B] switch 55 is a switch for setting the start and end of the repeat section, and is set by the switches 54 and 55. This is because, of the A and B positions, the position set on the front side in the performance progression direction is the start position of the repeat section, and the position set on the back side is the end position of the repeat section.
[0028]
A position P_AB position P than_BIs large, the B position P with respect to the performance progress_BIs A position P_AThe repeat start position P_RSA position P_A, And repeat start volume value V_REA position volume value V_AAnd repeat end position P_REB position P_BTo set the repeat end volume value V_REB position volume value V_BSet. On the other hand, A position P_AB position P than_BIs small, the B position P with respect to the performance progress_BIs A position P_AThe repeat start position P_RSB position P_B, And repeat start volume value V_REB position volume value V_BAnd repeat end position P_REA position P_ATo set the repeat end volume value V_REA position volume value V_ASet. In any case, the repeat start position P is determined by the processes of steps S21 to S23._RSIs the repeat end position P_REIt becomes a relationship of the front side. When these steps S21 to S23 are completed, the process proceeds to step S24 and subsequent to perform an automatic performance.
[0029]
FIG. 8 shows a flowchart of a tempo clock interrupt routine executed by the CPU 1. This routine is started in response to an interrupt periodically generated by the tempo clock, and is for executing a normal automatic performance or repeat performance.
[0030]
First, the performance flag F_PyIs determined (step S31), and the performance flag F is determined._PyIf is not "on", return. If it is “on”, it is during normal automatic performance or repeat performance, in which case the current position P of the song_CrIs advanced by one (clock unit) (step S32).
[0031]
Next, repeat performance flag F_RpIs determined (step S33). Repeat performance flag F_Rp= "On", that is, if a repeat performance is being performed, the current position P of the song_CrIs the repeat end position P_REIs reached (step S34). If it has been reached, the repeat end position P of the repeat section is reached._RERepeat start position P_RSTo jump to the current position P_CrRepeat start position P_RSProcess to return to “current position P_Cr← Repeat start position P_RSIs performed (step S35). At this time, repeat end position P_REThe sound that was sounded in step 3 is muted (step S36), and the repeat start position P_RSRepeat start volume value V_REThe sound volume information sending routine 2 for sending the sound volume information to the sound source 7 is executed. Further, in the determination in step S34, the current position P of the song_CrIs the repeat end position P_REIf not, the repeat performance is continued by skipping steps S35 to S37.
[0032]
FIG. 11 shows a flowchart of the volume information transmission routine 2. First, repeat end position P before jump_RERepeat end volume value V_REIs the repeat start position P after the jump_RSRepeat end volume value V_RE(Step S71), if not, repeat start position P_RSRepeat start volume value V_REIs sent to the sound source 7 (step S72). On the other hand, if it is the same, this sending process is not performed, and therefore the sound source 7 does not repeat the sound volume V_RETherefore, it is not necessary to perform extra processing.
[0033]
On the other hand, in the determination of step S33, the repeat performance flag F_RpIs “off”, it means that a normal automatic performance is being performed. In this case, the current position P of the song being played_CrIs the end P of the song_SEIs reached (step S38), and if it has been reached, the performance flag F_PyIs set to “off” so that the tempo clock interruption routine is not executed thereafter (step S39), the sound being sounded is muted (step S40), and the default volume value V is set._DfIs sent to the sound source 7 (step S41), the sound source 7 is set to the default sound volume, and the process returns. In the determination in step S38, the current position P_CrIs the end P of the song_SEIf not reached, steps S39 to S41 are skipped.
[0034]
In repeat performance or normal automatic performance, the current position P of the song is displayed on the display 6._CrIs displayed (step S42), and the current position P of the song is displayed._CrIt is determined whether there is performance data at a timing corresponding to (step S43). (Step S45).
[0035]
FIG. 9 shows a flowchart of the above-described volume value detection routine. In this volume value detection routine, when the volume value detection routine is started in step S11 or step S16 of the main routine, the current position P of the music currently being played is detected._CrDetect the volume value at, and use the detected volume value as the current volume value V_CrProcess to return as. First, the current volume value V_CrDefault volume value V as initial value_DfIs set (step S51). Next, a variable indicating the position c of the music for searching performance data for the volume value detection process is initialized to “0” (step S52). Thereafter, using this position c as a counter, variable c ≧ current position P_CrThe performance data is read quickly until
[0036]
That is, it is determined whether there is performance data at a timing corresponding to the position c of the song (step S53), and if it is read, it is read (step S54). If the type of the read performance data is a volume value, the volume The volume value of the information is the current volume value V_Cr(Step S56). If there is no performance data (step S53), steps S54 to S56 are skipped. Next, the position c of the song is advanced by one, and the position of the song ≧ current position P_CrThat is, the current position P currently being played_CrIt is determined whether or not the sound volume value detection process has been completed (step S58), and if not, the process returns to step S53 to repeat the process, and if so, the process returns to the main routine.
[0037]
FIG. 10 shows a flowchart of the volume information sending routine 1 started in step S11 of the main routine. In this volume information transmission routine 1, the default volume value V_DfAnd the current position P of the song_CrCurrent volume value at V_CrAre equal (step S61). If they are not equal, the current volume value V_CrIs sent to the sound source 7 (step S62). If they are equal, that is, the volume of the sound source 7 at this time is the current volume value V_CrIf so, step S62 is skipped so that the volume information is not transmitted. When the music is started from an arbitrary performance position by the processing of the volume information transmission routine 1, the volume value at the start position (= current volume value V_Cr) Is the default volume value V that has already been set for the sound source 7 by default processing._DfSince the volume information is not sent to the sound source 7, the sound source 7 does not need to perform extra processing when the performance of the music starts.
[0038]
Various modifications are possible in the practice of the present invention. For example, in the above-described embodiment, the case of the volume information is particularly described as the musical tone control information. However, not only the volume information but also information indicating the tone color of the musical tone, pitch bend information, tempo information controlling the performance tempo, hold control (Information that is on / off information and controls to maintain the tone generation or stop maintaining it). Further, the tone control information may include reset information for setting the volume and tone color of the sound source to default values. Note that the reset information does not have specific information such as the default volume value or default tone number, so the default values such as volume and tone set on the sound source side when this reset information is sent are recognized in advance. It is good to keep.
[0039]
In repeat performance, when jumping from the repeat end position to the repeat start position, the repeat start volume value at the repeat start position is compared with the repeat end volume value at the repeat end position. However, the present invention is not limited to this, and may be as follows. If a series of performance data from the repeat start position to the repeat end position is read and the volume information is not found, it is assumed that there is no change in the volume value in the repeat section, and the volume information of the repeat start volume value is not sent. To do.
[0040]
In the above-described embodiment, the volume information indicating the default volume value for the default is sent when the performance is stopped. However, the present invention is not limited to this, and for example, as follows: Thus, the volume information may not be transmitted. That is, every time the volume information is sent to the sound source during the performance, the volume value is stored on the CPU 1 side as an updated value so that the volume value finally sent to the sound source 7 can be confirmed at any time. Then, at the start of performance, instead of the default volume value of the above-described embodiment, the above-mentioned “last transmitted volume value” is compared with the volume value at the performance start position. The volume value at is not sent to the sound source 7. This eliminates the need to send extra information to the sound source 7 at the start of the performance.
[0041]
There are devices that can send volume information even when the performance is not being performed, for example, a device in which an automatic performance device and a mixer are integrated. In such a device, the automatic performance device may not perform. Volume information generated from the mixer unit can be sent to the sound source unit. For this reason, it is not sufficient to recognize the volume information held on the sound source side only by storing and updating only the volume information sent during the performance. In the case of such a device, the volume information sent to the sound source unit may be stored and updated as an integrated device composed of an automatic performance device and other devices.
[0042]
Further, in the above-described embodiment, as a criterion for not sending the volume information to the sound source 7, for example, the expression that the repeat end volume value and the repeat start volume value are equal is used, but the object of the present invention is achieved. In order to achieve this, the two values do not need to be exactly the same, and even if they are “approximately equal” as long as they do not give the listener a great sense of discomfort when the performance position jumps, Good. Specifically, the determination may be “equal” if the difference between both volume values is within a predetermined threshold ε, and “not equal” otherwise.
[0043]
【The invention's effect】
As described above, according to the present invention, useless processing on the sound source side can be eliminated by eliminating useless transmission of musical tone control information.
[Brief description of the drawings]
FIG. 1 is a diagram showing a performance system including an automatic performance device as one embodiment according to the present invention.
FIG. 2 is a diagram illustrating a group of operators on a panel in the embodiment device.
FIG. 3 is a diagram showing a format of performance data and a specific example thereof in the embodiment apparatus.
FIG. 4 is a diagram showing a specific example of performance data in the embodiment apparatus.
FIG. 5 is a flowchart (1/3) showing a main routine in the embodiment apparatus;
FIG. 6 is a flowchart (2/3) showing a main routine in the embodiment apparatus;
FIG. 7 is a flowchart (3/3) showing a main routine in the embodiment apparatus;
FIG. 8 is a flowchart showing a tempo interrupt routine in the embodiment apparatus.
FIG. 9 is a flowchart showing a volume value detection routine in the embodiment apparatus;
FIG. 10 is a flowchart showing a sound volume information transmission routine 1 in the embodiment apparatus.
FIG. 11 is a flowchart showing a volume information sending routine 2 in the embodiment apparatus;
FIG. 12 is a diagram for explaining skip reproduction in a conventional automatic performance device.
[Explanation of symbols]
1 CPU (Central Processing Unit)
2 RAM (Random Access Memory)
3 ROM (Read Only Memory)
4 Tempo clock source
5 controls
6 Display
7 Sound source
8 Amplifier
9 Speaker

Claims (3)

An automatic performance device that sequentially sends performance information including musical tone control information corresponding to the performance position of a song to the sound source side,
Jump means for jumping the performance position from the first position to the second position;
Musical tone control information detecting means for detecting the last musical tone control information before the performance position by searching from the performance information;
Whether the last musical tone control information before the first position detected by the musical tone control information detecting means is equal to the last musical tone control information before the second position detected by the musical tone control information detecting means . Determining means for determining
When it is determined by the determination means that the two tone control information are not equal, the last tone control information before the second position is sent to the sound source side at the time of jumping to the second position, and both are determined by the determination means. Control means for controlling not to send the last musical tone control information before the second position to the sound source side when jumping to the second position when the musical tone control information is determined to be equal . An automatic performance device that sequentially sends performance information including musical tone control information corresponding to the performance position of a song to the sound source side,
Recognizing means for recognizing musical tone control information held in advance by the sound source
Start means for starting the performance of the song from an arbitrary start position;
Musical tone control information detecting means for detecting the last musical tone control information before the start position of the performance by searching from the performance information;
And last tone control information at the starting position before the detection of the musical sound control information detecting means, determining means for determining whether the recognized tone control information by said recognition means is equal,
When it is determined by the determination means that the two tone control information is not equal, the last tone control information before the start position is sent to the sound source side at the start of the performance, and both the tone control information are transmitted by the determination means. An automatic performance apparatus comprising: control means for controlling not to send the last musical tone control information before the start position to the sound source side at the start of the performance when it is determined that they are equal.   The musical tone control information is constituted by a predetermined numerical value, and when the difference between the values of the two musical tone control information is within a predetermined threshold, the determination means controls both musical tone controls. 3. The automatic performance device according to claim 1, wherein it is determined that the values of the information are equal, and otherwise, it is determined that the values of the two tone control information are not equal.

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