JP2017058461A - Electronic wind instrument, music sound production instruction method and program - Google Patents

Abstract

An electronic wind instrument that generates a musical sound using the whistling sound generation principle is provided.
A CPU measures a resonance frequency that varies depending on the state of the mouth of a blower holding the mouthpiece, obtains a pitch f1 of a chromatic scale close to the resonance frequency, and further obtains a mouthpiece. The pitch f2 of the chromatic scale close to the pitch frequency extracted from the waveform formed by the breath blown into is acquired. If the pitch f1 and the pitch f2 match, the pitch f1 (or pitch f2) is set to the sounding pitch F. If not, the pitch f1 is set to the sounding pitch F preferentially. . If the mouthpiece 2 is breathing in, a note-on event including the sound pitch P and the volume corresponding to the breath pressure data is generated and sent to the sound source unit, and if no breath is blown, a note-off event is generated. To the sound generator.
[Selection] Figure 1

Description

  The present invention relates to an electronic wind instrument, a musical sound generation instruction method, and a program that generate a musical sound using the whistling sound generation principle.

  2. Description of the Related Art Conventionally, there has been known an electronic wind instrument in which a sound source is provided inside a housing imitating an acoustic wind instrument such as a saxophone and electronically generates musical sounds from the sound source. As this type of musical instrument, for example, in Patent Document 1, the positions of the upper lip and lower lip of a blower who come into contact with the mouthpiece are detected, and the musical tone parameters are controlled according to the detected positions of the upper lip and the lower lip. Thus, for example, a technique for changing the tone color of the generated musical tone with a slight movement of the upper lip and the lower lip is disclosed.

JP 2000-122641 A

  By the way, in the technique disclosed in Patent Document 1, the parameters of the musical sound generated are controlled according to the position of the lips contacting the mouthpiece and the movements of the cheeks and throats. There is a problem that it cannot occur.

  Accordingly, the present invention has been made in view of the above-described circumstances, and an object thereof is to provide an electronic wind instrument, a musical sound generation instruction method, and a program that can generate musical sounds using the whistling sound generation principle.

To achieve the above object, the electronic wind instrument of the present invention is:
Mouthpiece,
A sensor for detecting at least one of a breath pressure or a flow rate of the breath blown into the mouthpiece;
An acquisition process for acquiring a resonance frequency corresponding to a state in the oral cavity of a blower holding the mouthpiece, and a musical tone having a pitch corresponding to the acquired resonance frequency at a volume corresponding to the detection result of the sensor. And a processing unit that executes a sound generation instruction process for instructing sound generation to the sound source.

The musical sound generation method of the present invention includes:
A musical sound generation instruction method used for an electronic wind instrument having a mouthpiece, a sensor for detecting at least one of a breath pressure or a flow rate of breath blown into the mouthpiece, and a processing unit, wherein the processing unit includes:
Obtaining the resonance frequency corresponding to the state of the oral cavity of the blower holding the mouthpiece,
The musical sound having a pitch corresponding to the acquired resonance frequency is instructed to be sounded to a sound source at a volume corresponding to the detection result of the sensor.

The program of the present invention
A computer used as an electronic wind instrument having a mouthpiece and a sensor for detecting at least one of a breath pressure or a flow rate of breath blown into the mouthpiece,
Obtaining a resonance frequency corresponding to a state in the mouth of a blower holding the mouthpiece;
Instructing the sound source to produce a musical tone having a pitch corresponding to the acquired resonance frequency at a volume corresponding to the detection result of the sensor;
Is executed.

  In the present invention, it is possible to generate a musical tone using the whistling sound generation principle.

1 is an external view showing an external appearance of an electronic wind instrument 100 according to an embodiment of the present invention and a cross-sectional view showing an example of the structure of a mouthpiece 2; 2 is a block diagram showing an electrical configuration of the electronic wind instrument 100. FIG. It is a flowchart which shows the operation | movement of the main flow and operation | movement of a pitch detection process which CPU10 performs. It is a flowchart which shows the operation | movement of the resonance detection process which CPU10 performs. It is a flowchart which shows the operation | movement of the pitch detection process which CPU10 performs. It is a flowchart which shows the operation | movement of the sound generation pitch determination process which CPU10 performs, and the operation | movement of a sound source process. It is a figure which shows an example of the flowchart which shows the operation | movement of the pronunciation pitch determination process by a modification, and a pitch map.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A. External View FIG. 1A is an external view showing the external appearance of an electronic wind instrument 100 according to one embodiment of the present invention. An electronic wind instrument 100 shown in this figure is composed of a main body 1 formed as a square flute-like tube body and a mouthpiece 2 fitted to the base end side of the main body 1. On the other end side of the main body 1, a speaker 3 that emits a musical sound is provided. On the side of the main body 1, various operation switches 4 such as a tone color selection switch are arranged in addition to a power switch for turning on / off the power.

  Next, the structure of the mouthpiece 2 will be described with reference to FIG. The mouthpiece 2 fitted on the base end side of the main body 1 includes a speaker 20, a microphone 21 and a pressure sensor 22 inside. The speaker 20 emits a white noise sound, and its intention will be described later. The microphone 21 collects sound inside the mouthpiece. The pressure sensor 22 detects a breather's breath pressure blown from the mouthpiece (blowing mouth) of the mouthpiece 2.

B. Configuration Next, the electrical configuration of the electronic wind instrument 100 will be described with reference to FIG. In FIG. 2, the CPU 10 sets the operation mode of each unit of the musical instrument according to various switch events generated by the operation unit 16 (including the switch 4) and causes the sound source unit 17 to sound and mute based on the whistle sound generation principle (described later) Instruct. The ROM 11 stores various programs loaded on the CPU 10. The various programs include a main flow, a pitch detection process, and a sound source process which will be described later. Note that the pitch detection process includes a resonance detection process, a pitch detection process, and a tone generation pitch determination process.

  The RAM 12 includes a work area and a data area. The work area of the RAM 12 is used as a work area for the CPU 10 and temporarily stores various registers and flags. In the data area of the RAM 12, sound collection data and breath pressure data described later are temporarily stored. The white noise generation unit 13 generates a white noise signal under the control of the CPU 10 and supplies the white noise signal to the speaker 20 provided in the mouthpiece 2 to emit a white noise sound. In the present embodiment, the white noise signal is generated by the white noise generator 13, but instead, a white noise signal may be generated by using the sound source unit 17 described later.

  The breath pressure detection unit 14 generates breath pressure data obtained by sampling the output of the pressure sensor 22 (see FIG. 1B) disposed inside the mouthpiece 2 under the control of the CPU 10. The breath pressure data generated by the breath pressure detector 14 is temporarily stored in the data area of the RAM 12. The sound collection unit 15 generates sound collection data obtained by sampling the output of the microphone 21 (see FIG. 1B) disposed inside the mouthpiece 2 under the control of the CPU 10. The sound collection data generated by the sound collection unit 15 is temporarily stored in the data area of the RAM 12.

  The operation unit 16 includes various operation switches 4 disposed on the side of the main body 1 and generates a switch event corresponding to the switch type to be operated. This switch event is captured by the CPU 10. The sound source unit 17 includes a plurality of tone generation channels (MIDI channels) configured by a well-known waveform memory reading method, and generates musical sound waveform data according to note-on / note-off events supplied from the CPU 10.

  The sound system 18 converts the musical sound waveform data output from the sound source unit 17 into an analog musical sound signal, performs filtering such as removing unnecessary noise from the musical sound signal, and then amplifies it to amplify the main body 1. Sound is emitted from the speaker 3 (see FIG. 1A) provided at the open end. The MIDI interface 19 exchanges MIDI data with a MIDI instrument (not shown) under the control of the CPU 10.

C. Operation Next, with reference to FIGS. 3 to 6, each operation of the main flow, pitch detection processing, and sound source processing executed by the CPU 10 of the electronic wind instrument 100 described above will be described. Note that the pitch detection process includes a resonance detection process, a pitch detection process, and a tone generation pitch determination process. In the following description of the operation, the CPU 10 is the main operation unless otherwise specified.

(1) Main Flow Operation FIG. 3A is a flowchart showing the main flow operation executed by the CPU 10. When the power is turned on by turning on the power switch, the CPU 10 executes the main process shown in FIG. 3A and proceeds to step SA1 to perform initialization for initializing each part of the electronic wind instrument 100. When the initialization is completed, a pitch detection process is executed via step SA2.

  In the pitch detection process, as will be described later, a resonance frequency that varies depending on the state of the mouth of the blower holding the mouthpiece 2 (the position and shape of the tongue, the degree of swelling of the cheeks) is measured, and the resonance frequency is set to the resonance frequency. The pitch f1 of the near chromatic scale is acquired, and the pitch f2 of the chromatic scale close to the pitch frequency extracted from the waveform formed by the breath blown into the mouthpiece 2 is acquired. If the pitch f1 and the pitch f2 match, the pitch f1 (or pitch f2) is set to the sounding pitch F. On the other hand, if the pitch f1 does not match, the pitch f1 is preferentially set to the sounding pitch F. Set.

  Subsequently, in step SA3, sound source processing is executed. In the sound source processing, as will be described later, it is determined whether or not the blower is breathing into the mouthpiece 2. If the breather is breathing in, the note-on event including the sound generation pitch F and the volume corresponding to the breath pressure data is generated. When the sound generation pitch F is changed, the sound source unit 17 is instructed to generate sound with the changed sound generation pitch F. When no breath is blown, a note-off event is generated and supplied to the sound source unit 17.

  In step SA4, for example, other processing such as instructing the tone generator 17 to select the tone color selected by the tone color selection switch operation is performed, and then the processing returns to step SA2. Thereafter, the above steps SA2 to SA4 are repeatedly executed until the power is turned off by turning off the power switch.

(2) Operation of pitch detection process Next, the operation of the pitch detection process will be described with reference to FIG. FIG. 3B is a flowchart showing the operation of the pitch detection process. When this process is executed through step SA2 (see FIG. 3A) of the main flow described above, the CPU 10 advances the process to step SB1 shown in FIG. 3B and executes a resonance detection process.

  In the resonance detection process, as will be described later, collected sound data is obtained by transmitting a white noise sound from the internal space of the mouthpiece 2 to the mouth of the blower holding the mouthpiece 2 and collecting the white noise sound by the microphone 21. The frequency of the sound is analyzed, and the resonance frequency that changes according to the state of the mouth of the blower who holds the mouthpiece 2 (the position and shape of the tongue, the degree of swelling of the cheeks) is measured, and the sound of the chromatic scale close to the resonance frequency. Get high f1. That is, the pitch obtained by oral Helmholtz resonance is acquired in the same manner as the whistle pronunciation principle.

  In the next step SB2, a pitch detection process is executed. In the pitch detection process, as will be described later, when the wind blower blows into the mouthpiece 2, the white noise component is subtracted from the sound collection data (waveform inside the mouthpiece 2) collected by the microphone 21, The pitch of the waveform obtained by applying bandpass filtering to the remaining waveform is extracted, and when the previously measured pitch matches the currently measured pitch, the pitch f2 of the chromatic scale close to the currently acquired pitch is acquired.

  In step SB3, a sound generation pitch determination process is executed. In the pronunciation pitch determination process, as will be described later, if the pitch f1 obtained by the resonance detection process matches the pitch f2 obtained by the pitch detection process, the pitch f1 (or the pitch f2) is used as the pronunciation pitch F. On the other hand, if they do not match, the pitch f1 obtained by the resonance detection process is preferentially set to the sound generation pitch F.

(3) Operation of Resonance Detection Process Next, the operation of the resonance detection process will be described with reference to FIG. FIG. 4 is a flowchart showing the operation of the resonance detection process. When this process is executed via step SB1 (see FIG. 3B) of the pitch detection process described above, the CPU 10 advances the process to step SC1 shown in FIG. A white noise signal is generated, and the white noise signal is supplied to a speaker 20 provided in the mouthpiece 2 to emit a white noise sound. The white noise sound emitted in this way is transmitted from the internal space of the mouthpiece 2 to the mouth of the blower holding the mouthpiece 2.

  Next, in step SC2, the sound collection unit 15 is instructed to sample the output of the microphone 21 disposed in the mouthpiece 2. Thereby, the sound collection data acquired by the sound collection unit 15 is temporarily stored in the data area of the RAM 12. In the next step SC3, FFT (Fast Fourier Transform) processing is performed on the white noise sound data of a predetermined number of samples temporarily stored in the data area of the RAM 12.

  In step SC4, the resonance frequency is measured based on the frequency analysis result obtained by the FFT process in step SC3. This resonance frequency changes according to the state of the mouth of the blower holding the mouthpiece 2 (the position and shape of the tongue, the swelling of the cheeks), and the Helmholtz resonance, which is the whistling pronunciation principle. Equivalent to.

  Subsequently, in step SC5, it is determined whether or not the resonance frequency measured last time matches the resonance frequency measured this time. In the first measurement, since the previous measurement value does not exist, the determination result is “NO”, and the process proceeds to Step SC6. In step SC6, a pitch f1 of a chromatic scale close to the acquired measurement value (resonance frequency) is set. Thereafter, the process proceeds to step SC7, and after waiting for a predetermined time, the steps SC1 to SC4 are repeated and the resonance frequency is measured again.

  When the resonance frequency measured last time coincides with the resonance frequency measured this time, the determination result in step SC5 is “YES”, the process proceeds to step SC8, and the chromatic scale close to the measurement value (resonance frequency) acquired this time is obtained. The pitch f1 is set and this processing is finished.

  As described above, in the resonance detection process, the white noise sound is transmitted from the internal space of the mouthpiece 2 to the oral cavity of the blower holding the mouthpiece 2 and the white noise sound is collected by the microphone 21. Analyzing the frequency of the sound data, measure the resonance frequency that changes depending on the condition (the position and shape of the tongue, the swelling of the cheeks) of the blower who holds the mouthpiece 2, and the chromatic scale close to that resonance frequency Is obtained.

(4) Operation of Pitch Detection Process Next, the operation of the pitch detection process will be described with reference to FIG. FIG. 5 is a flowchart showing the operation of the pitch detection process. When this process is executed through step SB2 (see FIG. 3B) of the pitch detection process described above, the CPU 10 advances the process to step SD1 shown in FIG. It is determined whether or not 22 is on. Here, the pressure sensor 22 being in an ON state indicates a state in which the pressure sensor 22 is detecting a breath pressure. Therefore, in step SD1, it is determined whether or not the mouthpiece 2 is breathing.

  If no breath is being blown, the determination result in step SD1 is “NO”, and the present process is terminated. If breath is being blown in, the determination result in step SD1 is “YES”, and step SD2 Proceed to In step SD2, the sound collection unit 15 is instructed to sample the output of the microphone 21 disposed inside the mouthpiece 2. Thereby, the sound collection data acquired by the sound collection unit 15 is temporarily stored in the data area of the RAM 12.

  Next, in step SD3, the white noise component is subtracted from the sound collection data (MIC waveform) acquired in step SD2, and in the subsequent step SD4, a BPF (band pass filter) is added to the remaining waveform obtained by subtracting the white noise component. Apply processing. In step SD5, the pitch of the bandpass filtered waveform is extracted.

  In step SD6, it is determined whether or not the previously measured pitch matches the currently measured pitch. In the first measurement, since the previous measurement value does not exist, the determination result is “NO”, and the process proceeds to Step SD8. In step SD8, the pitch f2 of the chromatic scale close to the pitch acquired this time is set, and this processing is finished. On the other hand, if the previously measured pitch matches the currently measured pitch, the determination result in step SD6 is “YES”, and the process proceeds to step SD7 to set the pitch f2 of the chromatic scale close to the currently acquired pitch. And this processing is finished.

  As described above, in the pitch detection process, when the wind blower blows into the mouthpiece 2, the white noise component is subtracted from the sound collection data (waveform inside the mouthpiece 2) collected by the microphone 21, and the remaining noise is further subtracted. The pitch of the waveform obtained by performing bandpass filtering on the waveform is extracted, and when the previously measured pitch matches the currently measured pitch, the pitch f2 of the chromatic scale close to the currently acquired pitch is acquired.

(5) Operation of Sound Generation Pitch Determination Process Next, the operation of the sound generation pitch determination process will be described with reference to FIG. FIG. 6A is a flowchart showing the operation of the pronunciation pitch determination process. When this process is executed through step SB3 (see FIG. 3B) of the pitch detection process described above, the CPU 10 advances the process to step SE1 shown in FIG. 6A, and performs the resonance detection process described above. It is determined whether or not the obtained pitch f1 matches the pitch f2 obtained by the pitch detection process described above. If they match, the pitch f1 (or pitch f2) is set to the pronunciation pitch F, and the process is terminated. On the other hand, if they do not match, the pitch f1 obtained by the resonance detection process is preferentially set to the sound generation pitch F, and this process is terminated.

(6) Sound Source Processing Operation Next, the sound source processing operation will be described with reference to FIG. FIG. 6B is a flowchart showing the sound source processing operation. When this processing is executed through step SA3 (see FIG. 3A) of the main flow described above, the CPU 10 advances the processing to step SF1 shown in FIG. 6B and is provided inside the mouthpiece 2. It is determined whether or not the pressure sensor 22 is on, that is, whether or not the mouthpiece 2 is breathing.

  If the breath is being blown in, the determination result is “YES”, and the process proceeds to step SF 2 to generate a note-on event including the sound generation pitch F and the volume corresponding to the breath pressure data generated by the breath pressure detector 14. And sent to the sound source unit 17. As a result, the tone generator 17 generates musical tone data having a volume corresponding to the breath pressure data at the pitch of the pronunciation pitch F.

  Next, in step SF3, it is determined whether or not the pronunciation pitch F has been changed. If there is no change in the pronunciation pitch F, the determination result is “NO”, and the present processing is finished. However, if there is a change in the pronunciation pitch F, the determination result is “YES”, and the process proceeds to step SF4 to change the pronunciation pitch. The sound source unit 17 is instructed to generate a sound with F, and the process is finished.

  On the other hand, if no breath is blown, the determination result in step SF1 is “NO”, and the flow proceeds to step SF5. In step SF5, a note-off event is generated and sent to the sound source unit 17 to complete the present process. As a result, the tone generator 17 silences the musical sound that was sounded when the note-off event was received.

  As described above, in the sound source processing, it is determined whether or not the mouthpiece 2 is breathing. If the breath is being breathed, the note-on event including the sound generation pitch F and the volume corresponding to the breath pressure data is generated. Then, when the sound generation pitch F is changed, the sound source unit 17 is instructed to generate sound with the changed sound generation pitch F. When no breath is blown, a note-off event is generated and sent to the sound source unit 17.

D. Modified Example Next, the operation of the pronunciation pitch determination process according to the modified example will be described with reference to FIG. FIG. 7A is a flowchart showing the operation of the pronunciation pitch determination process according to the modification, and FIG. 7B is a diagram showing an example of a pitch map. As in the above-described embodiment, when this process is executed via step SB3 (see FIG. 3B) of the pitch detection process, the CPU 10 advances the process to step SG1 illustrated in FIG. In steps SG1 to SG2, the pitch map is referred to and it is determined whether or not there is a pronunciation pitch F corresponding to the pitches f1 and f2.

  The pitch map is a data table in which the tone pitch F corresponding to the pitch f1 and the pitch f2 obtained by measurement in advance is used as a data table, as in the example shown in FIG. 7B. In this example, for example, the pitch f1 of the chromatic scale close to the resonance frequency of the oral cavity of the blower is “146.8 Hz”, and the chromatic scale close to the pitch frequency extracted from the waveform formed by the breath blown into the mouthpiece 2 is used. When the pitch f2 is “155.6 Hz”, the corresponding sound generation pitch F is “D3 (note number: 50)”.

  As described above, when the tone pitch F corresponding to the pitch f1 and the pitch f2 exists in the pitch map, the determination result of the above step SG2 is “YES”, and the process proceeds to step SG3, where the tone pitch F is determined. This process is finished. On the other hand, if the tone pitch F corresponding to the pitch f1 and the pitch f2 does not exist in the pitch map, the determination result in step SG2 is “NO”, and the process proceeds to step SG4, where the pitch f2 is set. The tone generation pitch F is preferentially set and the present process is terminated.

  As described above, according to the present embodiment, the resonance frequency that changes in accordance with the state in the mouth of the blower holding the mouthpiece 2 (the position and shape of the tongue, the degree of swelling of the cheeks) is measured. The pitch f1 of the chromatic scale close to the resonance frequency is acquired, and the pitch f2 of the chromatic scale close to the pitch frequency extracted from the waveform formed by the breath blown into the mouthpiece 2 is acquired. If the pitch f1 and the pitch f2 match, the pitch f1 (or pitch f2) is set to the sounding pitch F. If not, the pitch f1 is set to the sounding pitch F preferentially. . If the wind blower is breathing into the mouthpiece 2, a note-on event including the sound generation pitch F and the volume corresponding to the breath pressure data is generated and sent to the sound source unit 17. Since a note-off event is generated and sent to the sound source unit 17, it is possible to generate a musical tone using the whistle pronunciation principle.

  In the embodiment and the modification described above, the pitch f1 is close to the chromatic scale close to the resonance frequency of the oral cavity of the blower, and the pitch f2 is close to the pitch frequency extracted from the waveform formed by the breath blown into the mouthpiece 2. Instead of fitting to the chromatic scale, the pitch frequency extracted from the waveform formed by the breath flicked into the mouthpiece 2 with the resonance frequency of the blower's oral cavity is used instead of being applied to the chromatic scale. It is good also as a mode handled as high f2.

  Further, the average pitch f1 (resonant frequency of the blower's mouth) and pitch f2 (pitch frequency extracted from the waveform formed by the breath blown into the mouthpiece 2) are applied to the chromatic scale, and the pronunciation pitch F is calculated. It may be an embodiment.

  As mentioned above, although one Embodiment of this invention was described, this invention is not limited to it, It is included in the invention described in the claim of this-application, and its equivalent range. Hereinafter, each invention described in the scope of claims at the beginning of the present application will be additionally described.

(Appendix)
[Claim 1]
Mouthpiece,
A sensor for detecting at least one of a breath pressure or a flow rate of the breath blown into the mouthpiece;
An acquisition process for acquiring a resonance frequency corresponding to a state in the oral cavity of a blower holding the mouthpiece, and a musical tone having a pitch corresponding to the acquired resonance frequency at a volume corresponding to the detection result of the sensor. An electronic wind instrument comprising: a processing unit that executes a sound generation instruction process for instructing sound generation to a sound source.

[Claim 2]
The processing unit performs a first conversion process of converting the acquired resonance frequency into a closest pitch among a plurality of pitches constituting a chromatic scale in the sound generation instruction process. Electronic wind instrument.

[Claim 3]
The electronic wind instrument further includes a microphone disposed in the mouthpiece,
In the acquisition process, the processing unit generates white noise in the blower's mouth and analyzes the sound in the mouth collected by the microphone after the white noise is generated. The electronic wind instrument of Additional remark 1 or 2 which performs the process which acquires the inside resonance frequency.

[Claim 4]
The processing unit further includes:
A second conversion process for extracting a frequency from the detection signal of the sensor, and converting the extracted frequency to the closest pitch among a plurality of pitches constituting the chromatic scale;
If the pitch converted by the first conversion process does not match the pitch converted by the second conversion process, the pitch converted by the first conversion process is The electronic wind instrument according to appendix 2, which is the pitch of a musical tone to be pronounced.

[Claim 5]
A musical sound generation instruction method used for an electronic wind instrument having a mouthpiece, a sensor for detecting at least one of a breath pressure or a flow rate of breath blown into the mouthpiece, and a processing unit, wherein the processing unit includes:
Obtaining the resonance frequency corresponding to the state of the oral cavity of the blower holding the mouthpiece,
A musical sound generation instruction method of instructing a sound source to generate a musical tone having a pitch corresponding to the acquired resonance frequency at a volume corresponding to a detection result of the sensor.
[Claim 6]
A computer used as an electronic wind instrument having a mouthpiece and a sensor for detecting at least one of a breath pressure or a flow rate of breath blown into the mouthpiece,
Obtaining a resonance frequency corresponding to a state in the mouth of a blower holding the mouthpiece;
Instructing the sound source to produce a musical tone having a pitch corresponding to the acquired resonance frequency at a volume corresponding to the detection result of the sensor;
A program that executes

1 Body 2 Mouthpiece 3 Speaker 4 Switch 10 CPU
11 ROM
12 RAM
DESCRIPTION OF SYMBOLS 13 White noise generation part 14 Breath pressure detection part 15 Sound collection part 16 Operation part 17 Sound source part 18 Sound system 19 MIDI interface 20 Speaker 21 Microphone 22 Pressure sensor 100 Electronic wind instrument

Claims (6)

Mouthpiece,
A sensor for detecting at least one of a breath pressure or a flow rate of the breath blown into the mouthpiece;
An acquisition process for acquiring a resonance frequency corresponding to a state in the oral cavity of a blower holding the mouthpiece, and a musical tone having a pitch corresponding to the acquired resonance frequency at a volume corresponding to the detection result of the sensor. An electronic wind instrument comprising: a processing unit that executes a sound generation instruction process for instructing sound generation to a sound source.   2. The processing unit executes a first conversion process of converting the acquired resonance frequency into a closest pitch among a plurality of pitches constituting a chromatic scale in the sound generation instruction process. The electronic wind instrument described. The electronic wind instrument further includes a microphone disposed in the mouthpiece,
In the acquisition process, the processing unit generates white noise in the blower's mouth and analyzes the sound in the mouth collected by the microphone after the white noise is generated. The electronic wind instrument of Claim 1 or 2 which performs the process which acquires the resonance frequency in the inside. The processing unit further includes:
A second conversion process for extracting a frequency from the detection signal of the sensor, and converting the extracted frequency to the closest pitch among a plurality of pitches constituting the chromatic scale;
If the pitch converted by the first conversion process does not match the pitch converted by the second conversion process, the pitch converted by the first conversion process is The electronic wind instrument according to claim 2, wherein the pitch of a musical tone to be pronounced is set. A musical sound generation instruction method used for an electronic wind instrument having a mouthpiece, a sensor for detecting at least one of a breath pressure or a flow rate of breath blown into the mouthpiece, and a processing unit, wherein the processing unit includes:
Obtaining the resonance frequency corresponding to the state of the oral cavity of the blower holding the mouthpiece,
A musical sound generation instruction method of instructing a sound source to generate a musical tone having a pitch corresponding to the acquired resonance frequency at a volume corresponding to a detection result of the sensor. A computer used as an electronic wind instrument having a mouthpiece and a sensor for detecting at least one of a breath pressure or a flow rate of breath blown into the mouthpiece,
Obtaining a resonance frequency corresponding to a state in the mouth of a blower holding the mouthpiece;
Instructing the sound source to produce a musical tone having a pitch corresponding to the acquired resonance frequency at a volume corresponding to the detection result of the sensor;
A program that executes

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