JPH0412558Y2 - - Google Patents

Description

[Detailed description of the invention] [Technical field of the invention] This invention is a pitch specifying device with a breath sensor that generates a desired musical tone in response to a player's wind performance, and an airflow responsive type device using the same. Regarding electronic musical instruments.

[Problems to be solved by conventional technology and invention] In conventional electronic wind instruments equipped with breath sensors,
There are devices that can variably control musical sound parameters such as the volume and quality of the musical sound to be generated according to the strength of the blowing input. The present applicant has also proposed this type of electronic wind instrument (for example, the one described in Japanese Patent Application Laid-open No. 1-77091).

By the way, in the case of these conventional electronic wind instruments,
In order to set the pitch of a musical tone to be generated, in a pitch setting means having a plurality of pitch setting switches, a fingering operation is performed to simultaneously turn on or off a selected combination of a plurality of pitch setting switches. Therefore, the pitch setting means outputs pitch information and the musical tone generation circuit generates a musical tone of a desired pitch.

Therefore, if a performer wants to change the pitch of a musical note during a performance, the performer must turn on or off multiple pitch setting switches accurately at the same time by fingering multiple fingers. If you want to change the pitch by a semitone, you will need to use the fingers in the opposite way (cross-fingering), which involves adding a new lever or key operation to the original fingering, and even experienced players will not be able to do it correctly. There is a problem in that there is a moment when the finger operation is not possible, and at that transitional moment, an unnecessary musical tone with an incorrect pitch is emitted.

Recently, an electronic wind instrument described in Japanese Patent Publication No. 59-42315 has been known as a solution to these conventional problems. According to this electronic wind instrument,
In order to prevent musical tones with unnecessary pitches from being emitted during octave shifting, an output silencing circuit is provided that mutes the musical tones during the shift. Once it was interrupted,
The problem is that it is not possible to perform naturally and smoothly.

In addition, if you operate the octave selector switch to change the pitch set by the pitch setting switch to raise or lower the pitch in octave units, the changeover operation may be performed. is particularly difficult to operate as it is done with the thumb.
It is difficult to perform the switching operation in synchronization with the fingering operation of the pitch setting switch, and there is also the problem that musical tones of unnecessary pitches are emitted.

[Purpose of the invention] This invention was made in view of the above-mentioned conventional problems. When the change operation on the octave change means for changing the pitch specified by the fingering operation on the high specified control in octave units is not performed simultaneously by the performer, but is performed in a time-varying manner. However, an object of the present invention is to provide a pitch specifying device which can surely specify the correct pitch intended by a performer without specifying the pitch against the performer's will.

Furthermore, after a predetermined time has elapsed depending on the operational difficulty of the fingering operation on the pitch specifying operator and the changing operation on the octave changing means, the pitch specified by the fingering operation and octave changing operation is changed. Another object of the present invention is to provide an airflow responsive electronic musical instrument that can reliably generate musical tones in accordance with the start timing of operations such as blowing by a player.

[Summary of the invention] In order to achieve such an object, the invention according to claim 1 relates to a combination of a plurality of pitch specifying operators for specifying the pitch of a musical tone to be generated. Until a first predetermined time period set in advance elapses from the point in time when the fingering operation or the fingering operation for at least one of the plurality of pitch specifying operators changes. The output of a pitch designation signal for specifying the pitch specified by the fingering operation performed during The pitch designation signal for designating the pitch specified by is controlled to be output at the time after the first predetermined time has elapsed, and the pitch designation signal is output at the time when the change operation on the octave change means changes. a pitch designation signal for designating a pitch that has been changed by an octave due to a change operation performed during the period from The output is prohibited, and instead, the pitch designation signal for specifying the pitch that has been changed by the octave by the changing operation is output after the second predetermined time has elapsed. The key point is that the output was controlled to be output at the point in time.

The invention according to claim 3 is based on the detection signals sequentially output from the air flow state detection means.
Alternatively, the key point is that a musical tone having a pitch specified by the pitch specifying signal outputted by each of the control means described in item 2 is generated.

[Embodiment] An embodiment of the electronic wind instrument according to this invention will be described below with reference to the drawings.

<Configuration> FIGS. 1A, 1B, and 1C are a front view, a left side view, and a back view showing the appearance of an embodiment of this invention. Breath sensor 1 that detects the strength or amount of breath, pitch setting switch group 2
(pitch setting switches 2-1 to 2-8), tone/effect selection switch group 3, speaker 4, power switch 5
etc. are provided. Furthermore, the wind instrument main body 101
is provided with an octave changeover switch group 12 for changing and setting the pitch in octave units with respect to the pitch set by the fingering operation of the pitch setting switch group 2. This octave changeover switch group 12 includes a normal setting switch 12-1 for setting the pitch set by the pitch setting switch group 2 as is, and a normal setting switch 12-1 for changing the pitch to one octave higher. 1 octave up switch 12-2, a 2 octave up switch 12-3 for changing and setting the pitch to a pitch two octaves higher, and a two octave up switch 12-3 for changing and setting the pitch to a pitch one octave lower. It consists of a one octave down switch 12-4.

FIG. 2 is an overall circuit configuration diagram showing the electric circuit within the wind instrument main body 101 of FIG. 1, and the same reference numerals as in FIG. 1 indicate those having the same functions.

The CPU 6, which is a central processing unit consisting of a microprocessor, controls the electric circuit of the entire wind instrument, as well as the generation and muting of musical tones produced by the musical tone generation circuit 7. The functions of the CPU 6 will be described below. state

The first function of the CPU 6 is to receive pitch information output from the pitch setting switch group 2 constituting the pitch setting means and to send it to the musical tone generation circuit 7. The second function is to first convert the breath information from the press sensor 1, which is the breath sensor means, into a voltage value in the voltage conversion circuit 8, and then convert it into digital breath information in the A/D converter 9. This digital breath information is received and outputted to the musical sound generation circuit 7 as musical sound generation start instruction information and musical sound control information such as the volume and timbre of the musical sound. The third function of the CPU 6 is to receive the pitch information from the pitch setting switch group 2 and the tone/effect information selected by the specified operation of the tone/effect changeover switch group 3, and to perform processing according to each of these pieces of information. Accordingly, a musical tone having a specific pitch using a specific tone color and effect is outputted to the musical sound output device 10, and the musical tone is emitted as an acoustic output from the musical sound output device 10.

The fourth function of the CPU 6 is to realize pitch information output control means, which is the key point of the configuration of the embodiment of this invention, and for this purpose, a timer 11-1, 11-2
This is to control the tone generation circuit 7 based on instructions from the tone generation circuit 7. That is, in order to change the pitch of a musical tone during a performance, the pitch setting switch group 2 can be turned on or off.
When the off state is changed by a fingering operation, pitch information is not immediately output to the musical sound generation circuit 7, but when there is a change in the designated operation of at least one switch in the pitch setting switch group 2, the pitch information is output to the musical sound generation circuit 7. After a predetermined first delay time has elapsed, new pitch information corresponding to the changed fingering operation is output to the musical sound generation circuit 7 based on the instruction from the timer 11-1. is configured to do so. Further, when the on/off state of the octave changeover switch group 12 is changed by the switching operation in order to change and set the pitch set by the fingering operation of the pitch setting switch group 2 in octave units. , instead of immediately outputting the pitch information for changing the octave to the musical sound generation circuit 7, the above-mentioned pitch information is outputted after the second delay time set longer than the first delay time has elapsed from the time when the change occurred. Based on instructions from the timer 11-2, new pitch information corresponding to the changed switching operation is output to the musical tone generating circuit 7.

Next, the operating states of the fingering operation of the pitch setting switch group 2 and the switching operation of the octave changeover switch group 12 in the electronic wind instrument of this embodiment will be described based on FIG.

FIG. 3 is a diagram showing an example of the difference in fingering operations of the pitch setting switch group 2 and switching operations of the octave changeover switch group 12. The fingering operation diagram for pitch setting switch group 2 corresponding to the pitches of each note G ₄ to B ₃ shown on the staff notation of the musical score in FIG. 3 1 is shown in FIG. The white circle indicates the switch-off state. FIG. 3 is a diagram showing the operation of the octave switch group 12 corresponding to the pitch of each note G ₄ to B ₃ shown in the musical score of FIG. , white square marks indicate the switching off state. For example, while playing the first note G ₄ shown in Figure 3 1, in order to change the pitch to play the next musical note with a pitch of A ₄ #, you must set the pitch of G ₄ . Pitch setting switch 2-5 to 2-7 corresponding to high
Turn on the octave switch 12-1 with your left hand to set it to the normal state. Next, turn off the pitch setting switch 2-5 with your left hand in response to the pitch of A ₄ #, continue to operate the pitch setting switches 2-6 and 2-7, and turn off the sharpness switch 2-9 with your left hand. is turned on, and the switching operation is maintained for the octave changeover switch 12-1. Furthermore, in order to change the pitch to play the third E ₅ pitch, turn on the pitch setting switch 2-5 with your left hand,
Turn off the sharp switch 2-9, turn on the pitch setting switches 2-4 and 2-3 with your right hand, and turn on the octave switch 12-2 with your left hand.
Switch to change the pitch of one octave higher. Similarly, when changing the pitch from a musical note with a pitch of _D5 to a musical note with a pitch of _D4 , or when changing the pitch from a musical note with a pitch of _G4 to a musical note with a pitch of _B3 , each octave is Changeover switch 12-1 or 12-4
A switching operation is required. In this case, with conventional electronic musical instruments, all operations using the fingers of both hands must be performed at the same timing, and if there are variations in the timing, incorrect pitch information may be generated at the moment of incorrect operation. Output to circuit 7,
A musical tone with an unnecessary pitch is emitted. especially,
Compared to the fingering operation of the pitch setting switch group 2, the switching operation of the octave changeover switch group 12 operated with the thumb is difficult, and it requires considerable skill to synchronize the timing of these operations.

In this invention, in order to prevent such inconvenient musical tones from being emitted, when the fingering operation state of the pitch setting switch group 2 is changed, the timer 11-1 is operated from the time of the change, and the timer 11-1 is activated from the time of the change. Based on the instructions from pitch setting switch group 2, the pitch information from pitch setting switch group 2 is sent to the musical tone generation circuit for a predetermined first delay time (at least the time until the fingering operation stabilizes in the correct state). The configuration is such that the output to 7 is delayed. Furthermore, when the switching operation state of the octave switching switch group 12 is changed, the timer 11 is also started from the time of the change.
-2 is operated, and based on the instruction from timer 11-2, the second delay time (at least the time until the switching operation stabilizes in the correct state), which is set longer than the first delay time, is activated. , pitch information from octave switch group 12 is sent to the CPU
6, the signal is delayed and outputted to a musical tone generating circuit 7.

In other words, when changing from playing the first note G ₄ # to playing the next A ₄ #, there is no change in the switching operation of octave switch group 12, so the change in pitch setting switch group 2 The first delay time (for example,
After a delay of 20 msec), a musical tone with a pitch of A ₄ # is sounded. Next, when the pitch changes from A ₄ # to E ₅ , both the pitch setting switch group 2 and the octave change switch group 12 change, so in this case, the pitch setting switch group 2 and the octave change switch group 12 change. hand,
The second delay time is set in advance to be longer than the first delay time.
The musical tone _E5 is sounded after a delay time (for example, 35 msec). Similarly, in the next change from _E5 to _D5 , there is no change in the octave change switch group 12, so the sound is delayed by the first delay time (20 msec). Next, when changing from D ₅ to D ₄ , pitch setting switch group 2 does not change, but octave change switch group 12 changes, so there is a delay of the second delay time (35 msec), and from D ₄ to G The change from _{G 4} to B 3 will be delayed by the first delay time, and the change from G ₄ to B ₃ will be delayed by the second delay time.
That is, in this third embodiment, when there is a change in the switching operation of the octave changeover switch group 12, the start of sound generation is delayed by the second delay time, which is set to be a longer time.

<Operation> Next, referring to FIG. 4 and FIG. 5, in this embodiment, it functions as pitch information output control means.
The processing operation of the CPU 6 will be described. Figure 4 shows
It is a pitch setting switch/octave changeover switch scan flowchart, and is a flow as a subroutine that repeatedly operates at a predetermined timing with respect to the operation of the main routine (not shown) of the CPU 6.

First, in step 4-1, the on/off operation status of pitch setting switch group 2 is scanned and read, the pitch information read by this scanning is stored in the current pitch information buffer NEWB, and the next In step 4-2, it is determined whether the current pitch information is the same as the contents of the previous pitch information buffer OLDB in which the previously read pitch information was stored. If it is determined to be YES, there is no change in the pitch setting switch group 2 for changing the pitch, so proceed to the next step 4-3.If it is determined to be NO, the pitch setting switch group 2 changes. Since the fingering operation for the first delay time preset in the pitch timer buffer KEYTIM (in this case, pitch setting switch group 2) is relatively easy, proceed to step 4-4.
Data with a relatively short delay time of 20msec
After setting the time buffer TIMBF built in the CPU 6 to prepare for counting the delay time, proceed to step 4-3.

In step 4-3, the switching operation state of the octave changeover switch 12 is scanned and read, and the octave change information read by the current scanning is stored in the current octave change information buffer NEWO. Next step 4-5
At step 4-6, it is checked whether the current octave change information is the same as the octave change information read last time. Pitch setting data and next step 4-
The result of adding the octave change data from this scanning stored in step 3 is added to the current pitch data buffer where the current pitch data is stored.
Store it in KEWNEW and proceed to the next step 4-7. The process proceeds to step 4-5, and if the answer is NO, the second delay time previously stored in the octave change timer buffer OCTTIM, in this case the octave change switch group 12, is transferred to step 4-8.
Since the switching operation for pitch setting switch group 2 is more difficult than the fingering operation for pitch setting switch group 2, the data of 35 msec, which is a relatively long delay time, is transferred to the time buffer TIMBF and the process proceeds to step 4-6. In step 4-7, it is checked whether the data content of the current pitch data buffer KEYNEW is equal to the data content of the previous pitch data buffer KEYOLD in which the pitch data from the previous scanning was stored, and if it is determined to be YES. , there is no change in pitch and there is no need to output new pitch information, so the program returns to the main routine.
If the answer is NO, it is necessary to output new pitch information, so proceed to the next step 4-9. At step 4-9, it is checked whether the pitch change flag 1 in the timers 11-1, 11-2 is set, and if it is determined as YES, the timers 11-1, 11-2 are set.
11-2 is counting, step 4-10
The pitch data stored in the current pitch data buffer KEYNEW is transferred to the previous pitch data buffer in preparation for the next scanning, and then the process returns to the main routine. If NO is determined, timer 1
1-1 and 11-2 are cases where counting has not yet started, and this time the pronunciation is newly delayed, so in the next step 4-11, each pitch change flag is set to 1, and then in step 4-1
2, in order to delay the output of pitch information by a predetermined time when changing the pitch, data corresponding to the first and second delay times preset in the time buffer TIMBF is sent to the built-in timer 11- of the CPU 6. 1 and 11-2, respectively, and the timers 11-1 and 11-2 start counting, and then return to the main routine.

In this way, this scan flow scans to see if there is a change in the on/off operating status of the pitch setting switch group 2 or the octave change switch group 12 during the performance.
When a change is detected, timers 11-1 and 11-2
Start counting from pitch setting switch group 2 and octave selection switch group 12.
The elapsed delay time for delaying the tone pitch information outputted to the musical sound generation circuit 7 via the CPU 6 by a set time is counted. That is, the key point of the operation of this embodiment is that even if there is a change in the state of the pitch setting switch group 2 or the octave changeover switch group 12, the changed pitch information is not immediately output to the musical tone generation circuit 7. .

Next, FIG. 5 is a flow chart of the pitch changing process in the CPU 6, and this flow causes a timer interrupt to the main routine.

First, in step 5-1, it is determined whether the value of the digital breath information based on the breath information detected by the breath sensor 1 while playing has exceeded the level of a predetermined key-on setting value that should instruct the start of musical tone generation. If it is judged as YES, during key-on,
In other words, a musical tone is being generated, and in step 5-2, the data of the current pitch information buffer NEWB or the previous pitch information buffer OLDB is sent to the musical tone generation circuit 7 as pitch information, and the pitch information, that is, the current pitch information, is sent to the musical tone generation circuit 7 as pitch information. Alternatively, a musical tone with a pitch corresponding to the on/off state of the pitch setting switch group 2 based on the previous fingering operation is generated.

Then, in step 5-3, timers 11-1, 1
The change flag 1-2 is reset to 0, and in step 5-4, the counts of the timers 11-1 and 11-2 are stopped, and the next state of the pitch setting switch group 2 and octave change switch group 12 is changed. After making preparations, the program returns to the main routine and ends the operation.

In addition, if the process advances to step 5-1 and is determined to be NO, this means that the value of the digital breath information has not reached the key-on setting value, and it is not yet the time to instruct the start of musical tone generation, but because the key is currently off. Then, the process advances to step 5-3, and the following operations are performed in the same manner as when the key is on, and the process returns to the main routine.

In this way, in this flow, based on the pitch information whose settings have been changed by the fingering operation on pitch setting switch group 2 or the switching operation on octave changeover switch group 12, the musical tone currently being sounded is changed to a new new one after the change. A process that performs processing to change the pitch to a musical tone and generate it, and a timer process to control the timer interrupt start time of this flow by counting the elapse of a predetermined delay time set in the timer buffer TIMBF. It is.

In the above embodiment, the CPU built-in timers 11-1 and 11-2 are used to count each delay time.
This timer 11-1, 1 is specially provided.
1-2, the delay time may be counted by counting the operating rotation speed of the main routine.

<Effects of the Example> As described above, in the electronic wind instrument in this example, the pitch setting switch group 2 (2-1 to
Even when the fingering operation in 2-8) changes, pitch information corresponding to the changed state is not immediately output to the musical tone generation circuit 7, and the pitch information corresponding to the change state is not immediately outputted to the musical sound generation circuit 7, but the pitch information corresponding to the change state is outputted to the musical tone generation circuit 7, A musical tone having a pitch corresponding to the changed fingering operation is generated from the musical tone generation circuit 7 only after the delay time (at least the time required to complete a correct and stable fingering operation) has elapsed. At the same time, even if the switching operation of the octave switching switch group 12 changes, pitch information for changing the octave corresponding to the change is not immediately output to the musical tone generation circuit 7, and the timer 11-2
A second delay time (longer than the first delay time, and at least the time required to complete a correct and stable octave switching operation) for a predetermined switching operation of the octave switching switch group 12 Pitch information for changing the octave is output to the musical tone generating circuit 7 only after the lapse of time. For this reason, there is a transitional state in which fingering operations are not stabilized in a predetermined operation state, that is, the timings of operations of multiple pitch setting switches 2-1 to 2-8 by multiple fingers do not match each other, and there is a time difference. Even when the pitch designation switches 2-1 to 2-8 are fingered, it is possible to not only prevent musical tones of unnecessary pitches from being produced temporarily, but also Pitch setting switch 2-1 to 2-8
Operation timing and octave selector switch group 1
To prevent musical tones of unnecessary pitches from being produced even when the switching operation timings of the switches 12-1 to 12-4 do not match each other and are operated with a time difference. be able to. Furthermore,
Unlike the conventional example, it does not have a silencing circuit, so
This has the effect of making it easier to play as the pitch can be changed while the musical tones are being emitted continuously without any interruption and the sound continues to be produced smoothly.

Furthermore, the second delay time for the switching operation of the octave change switch group 12 is preset to a longer time than the first delay time for the fingering operation of the pitch setting switch group 2. , it is possible to ensure a sufficient delay in sound production to completely complete the switching operation of octave changeover switch group 12, which is more difficult to operate than the fingering operation of pitch setting switch group 2. During the switching operation time of the changeover switch group 12, it is possible to prevent a musical tone having an unnecessary pitch from being temporarily emitted. Therefore, the first delay time for the fingering operation of the pitch setting switch group 2 can be set to a sufficiently short time separately from the second delay time for the octave changeover switch group 12.
Even when performing a fast trill performance, an electronic wind instrument can be obtained that can prevent a situation in which a musical tone after a change in fingering is emitted with an unnecessary delay.

Note that when both the pitch setting switch group 2 and the octave change switch group 12 change, the delay time is made longer, for example, 45 msec, and when only the octave change switch group 12 changes, the delay time is set to 35 msec. It may be configured as follows.

<Modified Embodiment> Note that the musical tone generating circuit 7 and the musical tone output device 10 are separately provided outside the wind instrument body 101, and the musical tone generating circuit 7 and the musical tone output device 10 are electrically connected to the wind instrument body 101. You can.

Furthermore, the external shape of the main body of the electronic wind instrument is not limited to the saxophone type, but can also be other shapes such as a clarinet type.

[Effect of the invention] As explained above, according to the invention recited in claim 1, a plurality of pitch specifying operators (in this embodiment, pitch setting From the point in time when there is a change in the fingering operation related to the combination for switch group 2) or the fingering operation for at least one pitch specifying operator among the plurality of pitch specifying operators, the preset The output of a pitch designation signal for designating the pitch specified by the fingering operation performed until the predetermined time (in this example, 20 ms) has elapsed is prohibited. Instead, the pitch designation signal for specifying the pitch specified by the fingering operation at the time when the first predetermined time has elapsed is outputted at the time after the first predetermined time has elapsed. On the other hand, the octave changing means (in this embodiment, octave change switch group 1
2) until a second predetermined time (in this example, 35 ms) that is longer than the first predetermined time elapses from the time of change when the change operation for 2) is changed. The output of a pitch designation signal for specifying a pitch that has been changed by an octave due to the changing operation that has been performed is prohibited, and instead, when the second predetermined time has elapsed, the pitch that has been changed by an octave due to the changing operation is prohibited. The pitch designation signal for designating the current pitch is controlled to be output after the second predetermined time has elapsed. For this reason, changing operations on the octave change means require more advanced performance techniques than fingering operations on the pitch specifying controllers, and therefore the difficulty level of the performance operation is lower than the octave changing operation. The output timing of the pitch designation signal related to the designation operation is output at the time when a first predetermined time (a relatively short time sufficient until the pitch designation operation is completely completed) has elapsed. On the other hand, the output timing of the pitch designation signal for the pitch specified by the octave change operation, which is a difficult performance operation, is set for a second predetermined time period (the octave change operation is longer than the first predetermined time period). It is possible to output the data after a relatively long period of time (sufficient to complete the process) has elapsed.

As a result, it is possible to reliably specify the correct pitch in accordance with the difficulty level of the performance technique in terms of performance operations.

Further, according to the invention described in claim 3, based on the detection signals sequentially outputted from the air flow state detection means, the control means outputs the signals after a predetermined period of time has elapsed since the change in fingering operation or the octave change operation. Since the structure is configured to generate a musical tone with a pitch specified by a pitch designation signal, a musical tone with the correct pitch intended by the performer can be generated according to the start timing of operations such as blowing by the performer. , it can be reliably started at the timing intended by the performer.

[Brief explanation of drawings]

Figures 1 to 5 are for explaining an embodiment of the electronic wind instrument of this invention. Figure 1A is a front view showing the exterior, Figure 1B is a left side view showing the exterior, and Figure 1C is a left side view showing the exterior. The rear view shows the external appearance, Figure 2 shows the overall configuration of the electric circuit, and Figure 3 shows the pitch setting switch.
FIG. 4 is a flowchart of the pitch setting switch and octave changeover switch operation, and FIG. 5 is a flowchart of the pitch change process. 1...Breath sensor, 2...Pitch setting switch group, 6...CPU, 9...A/D converter, 11,
11-1, 11-2...timer, 12...octave changeover switch group.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A plurality of pitch specifying operators for specifying the pitch of musical tones to be generated, and an octave pitch that is specified by fingering operations on the pitch specifying operators. octave changing means for changing in units; and a fingering operation related to a combination of the plurality of pitch specifying operators or a fingering operation for at least one pitch specifying operator among the plurality of pitch specifying operators. a pitch specification change detection means for detecting whether or not a change has occurred in the fingering operation; The output of the pitch designation signal for designating the pitch designated by the fingering operation performed during the first predetermined time elapses is prohibited; The pitch designation signal for designating the pitch specified by the fingering operation at the time when the time has elapsed is a pitch designation signal that is controlled to be output at the time after the first predetermined time has elapsed. a control means; an octave changing change detecting means for detecting whether or not there has been a change in the changing operation for the octave changing means; and a change detecting means for detecting a change in the changing operation by the octave changing change detecting means. A sound for specifying a pitch that has been changed by an octave by the change operation performed between the time of change and the elapse of a second predetermined time that is longer than the first predetermined time set in advance. While the output of the high designation signal is prohibited, instead, when the second predetermined time has elapsed, the pitch designation signal for designating the pitch that has been changed by the octave by the change operation is outputted from the second predetermined time. A pitch specifying device comprising: octave change control means for controlling the output to be output after a predetermined period of time has elapsed. (2) The pitch designation device according to claim 1, wherein the plurality of pitch designation operators are a plurality of pitch setting switches. (3) The pitch specifying device according to claim 1 or 2; air flow state detection means for sequentially detecting the state of the air fluid and sequentially outputting detection signals corresponding thereto; and the air flow state. musical tone generating means for generating a musical tone having a pitch specified by the pitch specifying signal outputted by the pitch specifying control means and the octave changing control means, based on the detection signals sequentially output from the detecting means; Claim 1 or 2 characterized by comprising: and
The air flow responsive electronic musical instrument according to any of the above.