JP2008076838A - Actuator for musical instrument performance, mouthpiece and wind instrument - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique for assisting a performance of a player so as to play a musical instrument by his or her own operation well, even if a performance technique is immature. <P>SOLUTION: Information indicating the correspondence between an assist button 12 and a pitch is stored in a button/pitch assignment table TBL. The player depresses the assist button 12 corresponding to a specified pitch, when desired to assist the specified pitch. An electronic sound source 135 supplies a sound signal, which represents a sound of a pitch corresponding to the depressed assist button 12, to a loudspeaker 112 by the timing that the assist button 12 is depressed. The loudspeaker 112 generates an acoustic wave based on the supplied signal. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an actuator for playing musical instruments, a mouthpiece, and a wind instrument.

Techniques for automatically playing musical instruments by machines are widely known. For example, automatic organs and automatic pianos that automatically perform musical instruments have been produced for a long time. In recent years, machines that automatically play not only keyboard instruments but also wind instruments have been developed. Patent Documents 1 to 3 disclose robots that automatically play brass instruments.
JP 2004-258443 A JP 2004-177828 A JP 2004-314187 A

By the way, in the conventional automatic organ, automatic piano, or the techniques described in Patent Documents 1 to 3, all performances are automatically performed by the machine, and the user only listens to the performance. On the other hand, there are many people who want to play music, and there are many requests that they want to enjoy playing musical instruments with their own performance even if their performance skills are not yet mature.
However, the conventional technology described above cannot meet the demand for playing such an instrument.

  The present invention has been made in view of the above-described background, and provides a technique for assisting the performance of a wind musician so that a musical instrument can be satisfactorily played by one's own operation even if the performance technique is immature. The purpose is to do.

A musical instrument performance actuator according to a preferred aspect of the present invention is output from a pitch designating unit for designating a specific pitch, an operation unit for outputting an operation signal corresponding to the operation content of a blower, and the operation unit. And a sound signal generating means for generating a sound signal representing the sound of the pitch designated by the pitch designating means in response to the operation signal, and a diaphragm for generating sound waves inside the mouthpiece of the wind instrument by vibrating And a drive mechanism that vibrates the diaphragm in accordance with the audio signal generated by the audio signal generation means.
In this aspect, a pressurized gas blowing mechanism for blowing pressurized gas into a space in which the diaphragm is provided may be provided.
Further, in this aspect, a breath pressure detecting means for detecting a breath pressure of the blower, and a pressurized gas blown by the pressurized gas blowing mechanism according to the breath pressure detected by the breath pressure detecting means. And an atmospheric pressure control means for controlling the atmospheric pressure.

Further, in the above-described aspect, the pressurized gas blowing mechanism is provided with the vibration plate for breathing the blower blown from the blowing port in response to an operation signal output from the operation means. You may blow into the space.
Further, in the above-described aspect, a shutter mechanism that is provided so as to be openable and closable in a transmission path of sound waves generated from the diaphragm, and that prevents the blower's breath and sound waves from the diaphragm from interfering in a closed state; You may provide the shutter mechanism control means which controls opening and closing of the said shutter mechanism.
In the above-described aspect, the shutter mechanism control unit may open the shutter mechanism when the driving mechanism vibrates the diaphragm, and close the shutter mechanism in other cases. .
In this aspect, the pitch designating unit designates a plurality of specific pitches, and the sound signal generating unit is designated by the pitch designating unit in accordance with an operation signal output from the operation unit. An audio signal representing a pitched sound may be generated.

Moreover, the mouthpiece which is a suitable aspect of this invention is provided with the above-mentioned actuator for musical instrument performance.
Moreover, the wind instrument which is a suitable aspect of this invention is provided with the above-mentioned mouthpiece.

  ADVANTAGE OF THE INVENTION According to this invention, even if a player's performance technique is immature, a player's performance can be assisted so that a musical instrument can be favorably played by one's own operation.

<First Embodiment>
<Configuration>
FIG. 1 is a diagram showing the configuration of a performance assist device 1A according to the first embodiment of the present invention. The performance assist device 1 </ b> A is used by being mounted on a brass instrument 2 such as a trumpet, and assists performance of the brass instrument 2 by a brass player. In the figure, the sound pressure generating actuator 11 </ b> A generates sound waves in the mouthpiece 21 of the brass instrument 2. The assist buttons 121, 122,..., 12n are operation means that are operated by the player, and output an operation signal corresponding to the operation content of the player. In the following description, when it is not necessary to distinguish these assist buttons 121, 122,..., 12n, they will be referred to as “assist buttons 12”. The control unit 13 is connected to the sound pressure generating actuator 11A and the assist button 12, and controls the sound pressure generating actuator 11A and the assist button 12. The control unit 13 has a selection button B1 for selecting any of the assist buttons 121, 122,..., 12n, and a selection button B2 for selecting a pitch. The brass player selects the assist button 12 by operating the selection button B1, and selects the pitch by operating the selection button B2. The selection buttons B1 and B2 output a signal corresponding to the operated content, and the control unit 13 determines the correspondence between the assist button 12 and the pitch according to the signals output from the selection buttons B1 and B2. To do.

  The performance information sensors 141, 142,..., 14 m are provided in the vicinity of the breathing outlet 211 of the mouthpiece 21 of the brass instrument 2, and the player's breath pressure, the player's lip tension (stiffness), This is detection means for detecting information relating to the performance of the performer (hereinafter referred to as “performance information”) such as the aperture size and the pitch of the sound. The performance information sensors 141, 142,..., 14 m are arranged through the lower side of the mouthpiece 21 in the figure, and are exposed in the lower hollow portion of the mouthpiece 21. The exhalation of the blower flows out in the direction of arrow D in the figure, and the performance information sensors 141, 142,. In the following description, when it is not necessary to distinguish the performance information sensors 141, 142,..., 14m, they will be referred to as “performance information sensors 14”.

Here, an example of a specific calculation method of the aperture and the stiffness will be described below. The aperture may be calculated from the detected value by providing a light sensor on the surface where the blowing port 211 of the mouthpiece 21 and the player's lips are in contact. Since the amount of light detected by the optical sensor varies depending on the opening area of the player's lips, the aperture can be calculated based on the detected amount of light.
On the other hand, stiffness is the degree of tension of the muscles around the mouth (muzzle muscles), and is difficult to detect directly. However, considering the state where the lips are relaxed and lightly pressed against the flat plate, the contact area of the lips on the flat plate is relatively large even when the pressing force is relatively small, whereas when the lips are strained Experience shows that the area is smaller. It is also clear that when the lip pressing force is increased while the lip tension is kept constant, the lip contact area on the flat plate also increases.
Based on the above principle, in this embodiment, the performance information sensor 14 is provided with a contact area sensor and a pressure sensor, and the stiffness is calculated based on these detected values. The contact area sensor is formed in a flat plate shape, and when the player's lips come into contact with one surface thereof, the contact area sensor detects the contact area and outputs information indicating the detected contact area. The pressure sensor is provided on the other surface of the contact area sensor, and when pressed by the lips via the contact area sensor, detects the pressing force and outputs information indicating the detected pressing force.

FIG. 2 is a side sectional view of the sound pressure generating actuator 11A and the mouthpiece 21. As shown in FIG. As shown in the figure, the sound pressure generating actuator 11 </ b> A is used by being mounted on the mouthpiece 21 of the brass instrument 2. The actuator 11A is fixed to the mouthpiece 21 by a support member 111 as shown.
In the figure, a speaker 112 includes a diaphragm 1121a, a voice coil, a magnet, and the like (not shown), and is a drive mechanism that vibrates the diaphragm 1121a in accordance with a supplied signal. The diaphragm 1121a vibrates to generate sound waves inside the mouthpiece 21. The reinforcing plate 1121b is a plate for reinforcing the diaphragm 1121a, and is bonded to the diaphragm 1121a. In the following description, for convenience of description, the diaphragm 1121a and the reinforcing plate 1121b are collectively referred to as “diaphragm 1121”.

  FIG. 3 is a block diagram schematically showing the configuration of the performance assist device 1A. In the figure, a button / pitch assign editing unit 131 functions as a pitch designating unit for designating a specific pitch. The button / pitch assign edit unit 131 includes a button for setting the correspondence between the assist button and the pitch. The brass player 2 operates the button / pitch assign edit unit 131. By doing so, it is possible to set the correspondence between the pitch for performing the performance assist and the assist button.

  The storage area 132 is a storage means such as an EEPROM (Electronically Erasable and Programmable Read Only Memory), and stores a button / pitch assignment table TBL. The button / pitch assignment table TBL stores information indicating the correspondence between the assist button 12 and the pitch. The button / pitch assignment editing unit 131 stores the correspondence between the assist button and the pitch in the button / pitch assignment table TBL according to the operation of the player.

  The button press detection unit 133 detects that the assist buttons 121, 122,..., 12n are pressed by receiving signals output from the assist buttons 121, 122,. The pitch determination unit 134 receives the signal from the button press detection unit 133, reads pitch data corresponding to the pressed button from the button / pitch assignment table TBL, and reads the pitch data as an electronic sound source. It outputs to 135.

The performance information detection units 1361, 1362,..., 136m generate performance information according to signals output from the performance information sensors 141, 142,..., 14m, and the generated performance information is used as performance information determination units 1371, 1372, 1372,. ..., output to 137m. The performance information determination units 1371, 1372, ..., 137m generate performance auxiliary signals that generate performance auxiliary signals indicating the degree of performance assistance in accordance with the performance information output from the performance information detection units 1361, 1362, ..., 136m. Functions as a means. The performance information determination units 1371, 1372,..., 137m generate performance auxiliary signals and supply the generated performance auxiliary signals to the electronic sound source 135.
In the following description, for convenience of description, when it is not necessary to distinguish the performance information detection units 1361, 1362,..., 136m, these will be referred to as “performance information detection unit 136”. Similarly, when it is not necessary to distinguish the performance information determination units 1371, 1372,..., 137m, they will be referred to as “performance information determination unit 137”.

  The electronic sound source 135 generates an electronic signal according to the pitch signal supplied from the pitch determination unit 134 and the performance signal supplied from the performance information determination unit 137, and the generated electronic signal is used for generating sound pressure. Supply to the actuator 11A. The sound pressure generating actuator 11 </ b> A drives the speaker 112 according to the audio signal supplied from the electronic sound source 135 to generate sound waves inside the mouthpiece 21.

<Operation>
The operation of this embodiment having the above-described configuration is as follows. First, before starting the performance, the blower selects one of the assist buttons 121, 122,..., 12n by operating the selection button B1 provided on the control unit 13, and operates the selection button B2. To select the pitch you want to pronounce. The selection buttons B1 and B2 output a signal corresponding to the operated content, and the button / pitch assign editing unit 131 designates the selected pitch according to the signals output from the selection buttons B1 and B2. The correspondence relationship between the assist button 12 and the pitch is stored in the button / pitch assignment table TBL.

  The brass player puts his lips on the mouthpiece 21 and blows his breath to play the brass instrument 2. Here, when assist sound generation is not necessary, the brass player vibrates the lips and performs normally without pressing the assist button 12. In this case, the sound pressure generating actuator 11A is not driven, and no sound wave is generated from the sound pressure generating actuator 11A.

On the other hand, when a specific pitch is to be assisted, the blower can open only the breath into the mouthpiece 21 without opening the lips and vibrating the lips, and at the same time respond to the specific pitch. The assist button 12 is pressed. The assist button 12 outputs an operation signal corresponding to the operated content. The button press detection unit 133 outputs a signal representing the pressed button to the pitch determination unit 134 in response to the operation signal output from the assist button 12. The pitch determination unit 134 electronically outputs a signal designating the pitch corresponding to the pressed button in accordance with the signal output from the button press detection unit 133 and the content stored in the button / pitch assignment table TBL. The sound is output to the sound source 135.
On the other hand, the performance information sensor 14 detects performance information and outputs a signal indicating the detected performance information to the performance information detection unit 136. The performance information detection unit 136 generates performance information according to a signal detected from the performance information sensor 14 and outputs the generated performance information to the performance information determination unit 137. The performance information determination unit 137 generates a performance assistance signal indicating the degree of performance assistance according to the performance information output from the performance information detection unit 136 and supplies the generated performance assistance signal to the electronic sound source 135.

  The electronic sound source 135 generates an audio signal according to the signal supplied from the pitch determination unit 134 and the signal output from the performance information determination unit 137. That is, the electronic sound source 135 generates a sound signal representing the sound of the pitch designated by the pitch determining unit 134 according to the operation signal output from the assist button 12, and outputs the sound signal to the sound pressure generating actuator 11A. . The sound pressure generating actuator 11 </ b> A drives the speaker 112 according to the sound signal generated by the electronic sound source 135. The speaker 112 vibrates the diaphragm 1121 according to the supplied audio signal, and thereby, a sound wave corresponding to the designated pitch is generated from the sound pressure generating actuator 11A.

  Sound waves generated from the sound pressure generating actuator 11 </ b> A are transmitted into the brass instrument 2. That is, sound waves corresponding to the pitch information and the performance information are generated in the conduit of the brass instrument 2 to which the mouthpiece 21 is attached. The transmitted sound wave becomes an internal sound of the brass instrument 2 with a resonance phenomenon. With the above operation, the brass instrument 2 generates a sound corresponding to the vibration of the diaphragm 1121 and the exhalation of the blower. This sound is the sound of air column resonance in the pipe of the brass instrument 2.

  As described above, in this embodiment, information indicating the correspondence relationship between the assist button 12 and the pitch is stored in the button / pitch assignment table TBL in advance, and the assist button 12 is played while the brass instrument 2 is being played. At the timing when one of the buttons is pressed, a sound having a pitch corresponding to the pressed assist button 12 is emitted from the sound pressure generating actuator 11A. As a result, even if a blower who is unskilled in playing a particular pitch and is not good at playing a specific pitch, it is possible to generate a sound with a pitch that the blower is not good at. The performance of the person can be assisted.

<Second Embodiment>
FIG. 4 is a diagram showing a configuration of a performance assist device 1B according to the second embodiment of the present invention. The configuration of the performance assist device 1B shown in FIG. 4 is different from that of the performance assist device 1A shown in FIG. 1 in the first embodiment described above in that it has shutter opening / closing actuators 15, 16, and 17. The other components are the same as the performance assist device 1A described above. Therefore, in the following description, the same components as those in the performance assist device 1A described above are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  FIG. 5 is a diagram showing the configuration of the sound pressure generating actuator 11B. In the figure, the inflow path 21 a is an inflow path through which air flows into the duct of the mouthpiece 21. The diaphragm 1121 is in contact with the opening 21b of the inflow path 21a in the stationary state to block the inflow path 21a, and forms a gap due to vibration between the opening 21b in the vibration state. The space forming member 114 is a member that forms a space that covers a portion where the inflow passage 21 a and the diaphragm 1121 are in contact with each other. The air introduction pipe 18 is a gas blowing mechanism for blowing the breath of the blower blown from the blowing port 211 of the mouthpiece 21 into the space of the space forming member 114, that is, the space where the diaphragm 1121 is provided. It is. The shutter opening / closing actuators 15, 16, and 17 are shutter mechanisms that open and close the shutters 151, 161, and 171, respectively. The shutters 151 and 171 are provided on the transmission path of the sound wave generated from the diaphragm 1121 so as to be openable and closable. On the other hand, the shutter 161 is provided in the air introduction pipe 18, and in the closed state, the breather's exhalation is prevented from being blown into the space where the diaphragm 1121 is provided.

FIG. 6 is a block diagram schematically showing the configuration of the performance assist device 1B. In the figure, a shutter group 1 opening / closing control unit 138 functions as a shutter mechanism control unit that controls the opening / closing of the shutter opening / closing actuators 15 and 16. The shutter group 2 opening / closing control unit 139 functions as a shutter mechanism control unit that controls opening / closing of the shutter opening / closing actuator 17.
More specifically, when the speaker 112 vibrates the diaphragm 1121, that is, when performing an assist performance, the shutter group 1 opening / closing control unit 138 opens and closes the shutter 151, 161 so as to open the shutter. Actuators 15 and 16 are controlled. On the other hand, the shutter group 2 opening / closing controller 139 controls the shutter opening / closing actuator 17 to close the shutter 171 (see FIG. 5B). On the contrary, when the speaker 112 is not driven, that is, when a normal performance is being performed, the shutter group 1 opening / closing control unit 138 closes the shutters 151 and 161 as shown in FIG. The shutter opening / closing actuators 15 and 16 are controlled, and the shutter group 2 opening / closing controller 139 controls the shutter opening / closing actuator 17 to open the shutter 171.
In this embodiment, when the performance assist device 1B is turned off, the open / closed states of the shutters 151, 161, and 171 are as shown in FIG.

  Next, the operation of this embodiment will be described. The operation of this embodiment is different from the operation of the performance assist device 1A of the first embodiment described above in that the breath of the blower is blown into the diaphragm 1121 and the shutter according to the vibration of the diaphragm 1121. The mechanism is controlled, and the general flow of other operations is the same as that shown in the first embodiment. Therefore, in the following description, operations different from those of the above-described first embodiment are mainly described, and descriptions of operations similar to those of the first embodiment are omitted as appropriate.

When the assist sound is not necessary, the blower vibrates the lips and performs normally without pressing the assist button 12. In this case, the sound pressure generating actuator 11B is not driven, and no sound wave is generated from the sound pressure generating actuator 11B.
At this time, as shown in FIG. 5A, the shutter group 1 opening / closing control unit 138 controls the shutter opening / closing actuators 15 and 16 to close the shutters 151 and 161, while the shutter group 2 opening / closing control unit 139 The shutter opening / closing actuator 17 is controlled to open the shutter 171. The exhalation of the blower blown from the blowing port 211 of the mouthpiece 21 is sent into the brass instrument 2 from the mouthpiece 21, and sound waves corresponding to the exhalation of the blower are generated from the brass instrument 2.

  On the other hand, when a specific pitch is to be assisted, the blower can open only the breath into the mouthpiece 21 without opening the lips and vibrating the lips, and at the same time respond to the specific pitch. The assist button 12 is pressed. In response to the operation signal output from the assist button 12, the electronic sound source 135 generates a sound signal representing the sound of the pitch designated by the pitch determining unit 134 and outputs the sound signal to the sound pressure generating actuator 11B. The sound pressure generating actuator 11 </ b> B drives the speaker 112 in accordance with the audio signal generated by the electronic sound source 135. The driving operation of the speaker 112 is the same as that in the first embodiment described above, and thus detailed description thereof is omitted here.

  At this time, as shown in FIG. 5B, the shutter group 1 opening / closing controller 138 controls the shutter opening / closing actuators 15 and 16 to open the shutters 151 and 161, while the shutter group 2 opening / closing controller 139 Then, the shutter opening / closing actuator 17 is controlled to close the shutter 171. The exhalation of the blower blown from the blowing port 211 of the mouthpiece 21 is sent to the space of the space forming member 114, that is, the space provided with the diaphragm 1121 through the air introduction pipe 18. As the diaphragm 1121 vibrates, the exhaled air that has been sent becomes pulsated. Thereby, a sound wave is generated in the mouthpiece 21.

  The diaphragm 1121 functions as a valve that oscillates the exhaled breath by vibrating. Specifically, when the diaphragm 1121 is not oscillating (stationary state), the space forming member 114 and the diaphragm 1121 are in contact with each other, the inflow path 21a is blocked, and the exhalation path is blocked. It will be in the state. On the other hand, when the vibration plate 1121 vibrates, a gap is generated between the space forming member 114 and the vibration plate 1121, and the inhaled breath flows into the inflow passage 21a using the gap as a passage. The air flowing into the inflow passage 21a pulsates according to the vibration of the diaphragm 1121.

  As described above, in this embodiment, information indicating the correspondence relationship between the assist button 12 and the pitch is stored in advance in the button / pitch assignment table TBL, and the assist button 12 is played during the brass instrument 2 playing. At the timing when any one of the buttons is pressed, a sound having a pitch corresponding to the pressed assist button 12 is emitted from the sound pressure generating actuator 11. As a result, even if a blower who is unskilled in playing a particular pitch and is not good at playing a specific pitch, it is possible to generate a sound with a pitch that the blower is not good at. The performance of the person can be assisted.

  Furthermore, in this embodiment, when the assist sound is not required, the shutter 151 and 161 are closed while the shutter 171 is opened as shown in FIG. This is the same as a general mouthpiece not equipped with the assist device 1B. Therefore, it is possible to prevent the fundamental resonance (resonance frequency) of the tube from changing greatly, and the wind performer performs the same performance as that using a general mouthpiece not equipped with a performance assist device. be able to.

  In this embodiment, since the shutters 151 and 161 are closed when the power of the performance assist device 1B is turned off, the same wind performance as that of a raw brass instrument is performed without the assistance of the sound pressure generating actuator 11B. It can be carried out. That is, according to this embodiment, by turning on the power of the performance assist device 1B, performance assist by the sound pressure generating actuator 11B can be performed, while the power of the performance assist device 1B is turned off. Thus, it is possible to perform the same performance as that using a general mouthpiece without using the sound pressure generating actuator 11B.

  In this embodiment, when a specific pitch is to be assisted, the breather's breath is sent to the diaphragm 1121, so that a conventional electric drive only speaker (hereinafter referred to as a “pure electric speaker”) is used. A sound wave having a higher sound pressure than that used can be generated. As a result, high sound pressure sound waves for wind instrument performance can be efficiently generated with less power than a pure electric speaker.

  Furthermore, in this embodiment, the diaphragm 1121 functions as a valve that vibrates the exhaled breath, so that the breath that is blown out can flow out into the pipe as air pulsated by the vibration of the diaphragm 1121. it can. As a result, faithful to the electrical signal input to the speaker 112, the applied compressed air pressure can be converted into a sound wave, and a sound similar to an actual wind sound is emitted as if a person is playing. Can be made.

<Third Embodiment>
FIG. 7 is a diagram showing a configuration of a performance assist device 1C according to the third embodiment of the present invention. The configuration of the performance assist device 1C shown in FIG. 7 is different from that of the performance assist device 1B shown in FIG. 4 in the second embodiment described above in that a compressor system 19 is provided, and other configurations are described above. This is the same as that of the performance assist device 1B. Therefore, in the following description, the same components as those in the performance assist device 1B described above are denoted by the same reference numerals, and the description thereof is omitted as appropriate.

  FIG. 8 is a side sectional view of the sound pressure generating actuator 11 </ b> C and the mouthpiece 21 and a diagram showing the configuration of the compressor system 19. The compressor system 19 is a pressurized gas blowing mechanism that blows pressurized gas into the diaphragm 1121. In the figure, the air tank 191 is connected to the compressor 192, stabilizes the pressure of the compressed air generated by the compressor 192, and blows in between the space forming member 114 and the diaphragm 1121. The flow rate adjustment valve 193 is a valve for adjusting the amount of air to be blown in. The gate valve 194 is a valve for switching ON / OFF of the blowing of compressed air. The gate valve opening / closing actuator 195 is a mechanism that controls the opening / closing of the gate valve 194, and controls the opening / closing of the gate valve 194 in accordance with a signal supplied from the control unit 13.

  FIG. 9 is a block diagram schematically showing the configuration of the performance assist device 1C. In the figure, the electronic sound source 135 controls the gate valve opening / closing actuator 195 according to the generated breath pressure assist signal to adjust the amount of compressed air sent to the sound pressure generating actuator 11C. More specifically, the control unit 13 increases the pressure of the compressed air to be supplied when the detected breath pressure is small, while the pressure of the compressed air to be supplied is increased when the detected breath pressure is small. Control to make it smaller. Further, the electronic sound source 135 supplies a signal corresponding to the generated performance assist signal to the speaker 112 to vibrate the diaphragm 1121.

  The control unit 13 controls the opening / closing of the shutters 151, 161, and 171 in synchronization with a signal supplied to the speaker 112. More specifically, when the speaker 112 vibrates the diaphragm 1121, that is, when performing an assist performance, the shutter group 1 opening / closing control unit 138 opens and closes the shutter 151, 161 so as to open the shutter. Actuators 15 and 16 are controlled. On the other hand, the shutter group 2 opening / closing control unit 139 controls the shutter opening / closing actuator 17 to close the shutter 171 (see FIG. 8B). On the contrary, when the speaker 112 is not driven, that is, when a normal performance is being performed, the shutter group 1 opening / closing control unit 138 closes the shutters 151 and 161 as shown in FIG. The shutter opening / closing actuators 15 and 16 are controlled, and the shutter group 2 opening / closing controller 139 controls the shutter opening / closing actuator 17 to open the shutter 171.

  Next, the operation of this embodiment will be described. The operation of this embodiment differs from the operation of the performance assist device 1B of the second embodiment described above in that compressed air is supplied from the compressor system 19 to the space where the diaphragm 1121 is provided instead of the exhalation of the blower. The general flow of other operations is the same as that shown in the second embodiment described above. Therefore, in the following description, operations different from those of the second embodiment described above are mainly described, and descriptions of operations similar to those of the second embodiment are omitted as appropriate.

  When the assist sound is not necessary, the blower vibrates the lips and performs normally without pressing the assist button 12. In this case, the sound pressure generating actuator 11C is not driven, and no sound wave is generated from the sound pressure generating actuator 11C.

  On the other hand, when a specific pitch is to be assisted, the blower can open only the breath into the mouthpiece 21 without opening the lips and vibrating the lips, and at the same time respond to the specific pitch. The assist button 12 is pressed. In response to the operation signal output from the assist button 12, the electronic sound source 135 generates a sound signal representing the sound of the pitch designated by the pitch determining unit 134 and outputs the sound signal to the sound pressure generating actuator 11C. The sound pressure generating actuator 11 </ b> C drives the speaker 112 in accordance with the audio signal generated by the electronic sound source 135. The driving operation of the speaker 112 is the same as that in the second embodiment described above, and thus detailed description thereof is omitted here.

  At this time, as shown in FIG. 8B, the shutter group 1 opening / closing controller 138 controls the shutter opening / closing actuators 15 and 16 to open the shutters 151 and 161, while the shutter group 2 opening / closing controller 139 Then, the shutter opening / closing actuator 17 is controlled to close the shutter 171. As a result, the exhalation of the blower blown from the blowing port 211 of the mouthpiece 21 flows out from the breathing hole 196.

  On the other hand, the electronic sound source 135 controls the opening / closing of the gate valve 194 by controlling the gate valve opening / closing actuator 195 in synchronization with ON / OFF of the signal supplied to the speaker 112. Thereby, the pressure of the compressed air flowing out to the air introduction pipe 18 is controlled.

  As described above, the compressed air passing through the actuator 11 </ b> C becomes a sound wave and is transmitted into the brass instrument 2. That is, a sound wave corresponding to the performance assist signal is generated in the conduit of the brass instrument 2 to which the mouthpiece 21 is attached. The transmitted sound wave becomes an internal sound of the brass instrument 2 with a resonance phenomenon. With the above operation, the brass instrument 2 generates a sound corresponding to the vibration of the diaphragm 1121 and the exhalation of the blower. This sound is the sound of air column resonance in the pipe of the brass instrument 2.

  In this embodiment, since the compressor system 19 blows compressed air into the space of the space forming member 114, that is, the space where the diaphragm 1121 is provided, the sound wave having a higher sound pressure than when a pure electric speaker is used. Can be generated. As a result, high sound pressure sound waves can be generated efficiently in wind instrument performance with less power than a pure electric speaker.

  Further, in this embodiment, since the diaphragm 1121 functions as a valve that vibrates the compressed air that is blown in, the compressed air that is blown out flows into the pipe as air pulsated by the vibration of the diaphragm 1121. be able to. As a result, faithful to the electrical signal input to the speaker 112, the applied compressed air pressure can be converted into a sound wave, and a sound similar to an actual wind sound is emitted as if a person is playing. Can be made.

<Modification>
Although the embodiment of the present invention has been described above, the present invention is not limited to the above-described embodiment, and can be implemented in various other forms. An example is shown below.
(1) The embodiment described above shows an example in which the present invention is applied to a brass instrument such as a trumpet. However, the present invention is not limited to a brass instrument, and may be applied to assist other wind instruments such as a woodwind instrument. Can do. For example, in the case of woodwind instruments, a sound pressure generating actuator that generates sound pressure inside the mouthpiece is attached to the mouthpiece, and this sound pressure generating actuator generates sound waves when the assist button is pressed. Also good.

(2) In the above-described embodiment, a plurality of assist buttons 12 are provided, and the correspondence between the assist buttons 12 and the pitches is stored in the button / pitch assignment table TBL. The number of assist buttons 12 need not be plural, and one assist button may be provided. In this case, the blower selects a specific pitch by, for example, operating a selection button of the control unit. When the assist button is operated during blowing, the assist button outputs an operation signal corresponding to the operated content, and the actuator has a specified pitch at the timing when the operation signal is output from the operation means. A sound may be generated.

(3) In the above-described embodiment, the electronic sound source 135 is a sound representing a sound generated according to the pitch signal output from the pitch determination unit 134 and the performance information output from the performance information determination unit 137. A signal was output. As an audio signal output method, for example, waveform data corresponding to a plurality of pitches may be stored in advance, and the waveform data may be read out and output. For example, reference waveform data may be stored in advance. In addition, the waveform data may be generated by processing the waveform data stored according to the supplied pitch signal and performance information, and the generated waveform data may be output.

(4) In the third embodiment described above, the electronic sound source 135 controls the ON / OFF of the gate valve 194 by controlling the gate valve opening / closing actuator 195, thereby turning on / off the compressed air. OFF was controlled. In this case, for example, the degree of opening of the gate valve 194 may be controlled according to the performance information, such as gradually opening the gate valve 194.

(5) In the configuration shown in FIG. 2, a shutter 18 </ b> A as shown by a chain line in FIG. 2 may be provided and the opening / closing of the shutter 18 </ b> A may be controlled according to the behavior of the speaker 112. By doing so, it is possible to prevent the resonance frequency in the tube from shifting.

(6) In the above-described embodiment, information indicating the player's breath pressure, the player's lip tension, the lip opening size, the pitch, and the like is used as the performance information. The performance information is not limited to these, and any information related to performance may be used.

(7) In the above-described embodiment, compressed air is used as the pressurized gas, but the gas used may be other than air. Further, the pressurized gas may be selected according to the desired tone color.

(8) In the above-described embodiment, the performance assist device that can be attached to the brass instrument 2 or the mouthpiece 21 has been described. The performance assist device may be configured as a separate device from the mouthpiece as a device that can be attached to the mouthpiece 21, or may be configured integrally with the mouthpiece. The performance assist device may be configured as a separate instrument from the brass instrument as a device that can be attached to the brass instrument, and is a brass instrument in which the brass instrument and the performance assist device are integrated. Also good.

It is a figure which shows the structure of a performance assistance apparatus. It is a sectional side view of a mouthpiece. It is a block diagram which shows the structure of a performance assistance apparatus. It is a figure which shows the structure of a performance assistance apparatus. It is a sectional side view of a mouthpiece. It is a block diagram which shows the structure of a performance assistance apparatus. It is a figure which shows the structure of a performance assistance apparatus. It is a sectional side view of a mouthpiece. It is a block diagram which shows the structure of a performance assistance apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1A, 1B, 1C ... Performance assist apparatus, 2 ... Brass instrument, 11A, 11B, 11C ... Actuator for sound pressure generation, 12, 121, 122, 12n ... Assist button, 13 ... Control unit, 14 ... Performance information sensor, 15 , 16, 17 ... shutter opening / closing actuator, 18 ... air introduction pipe, 19 ... compressor system, 21 ... mouthpiece, 111 ... support member, 112 ... speaker, 114 ... space forming member, 131 ... button / pitch assignment edit section , 132 ... storage area, 133 ... button press detection unit, 134 ... pitch determination unit, 135 ... electronic sound source, 136, 1361, 1362, 136m ... performance information detection unit, 137, 1371, 1372, 137m ... performance information determination unit 138: Shutter group 1 opening / closing control unit, 139 ... Shutter Loop 2 opening / closing controller 141 ... Performance information sensor 151, 161, 171 ... Shutter 191 ... Air tank 192 ... Compressor 193 ... Flow control valve 194 ... Gate valve 195 ... Actuator for gate valve opening / closing 196 ... Breathing hole, 211 ... Blow-in port, 1121 ... Diaphragm, B1, B2 ... Select button.

Claims (7)

A pitch designating means for designating a specific pitch;
Operation means for outputting an operation signal corresponding to the operation content of the blower;
Sound signal generating means for generating a sound signal representing a sound of a pitch designated by the pitch designating means in response to an operation signal output from the operation means;
A vibration plate that generates sound waves inside the mouthpiece of the wind instrument by vibrating,
An actuator for musical instrument performance, comprising: a drive mechanism that vibrates the diaphragm in accordance with the audio signal generated by the audio signal generation means. The musical instrument playing actuator according to claim 1,
An actuator for musical instrument performance, comprising a pressurized gas blowing mechanism for blowing pressurized gas into a space in which the diaphragm is provided. The actuator for musical instrument performance according to claim 2,
A breath pressure detecting means for detecting the breath pressure of the blower;
An actuator for musical instrument performance, comprising: air pressure control means for controlling the pressure of the pressurized gas blown by the pressurized gas blowing mechanism according to the breath pressure detected by the breath pressure detecting means. The actuator for musical instrument performance according to claim 2,
The pressurized gas blowing mechanism blows the breath of the blower blown from the blowing port into the space provided with the diaphragm in response to an operation signal output from the operation means. An actuator for musical instrument performance. The actuator for musical instrument performance according to claim 2,
A shutter mechanism that is provided so as to be openable and closable in a transmission path of sound waves generated from the diaphragm, and prevents interference between the exhalation of the blower and sound waves from the diaphragm in a closed state;
An actuator for musical instrument performance, comprising: a shutter mechanism control means for controlling opening and closing of the shutter mechanism.   A mouthpiece comprising the musical instrument performance actuator according to any one of claims 1 to 5.   A wind instrument comprising the mouthpiece according to claim 6.

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