JP2006003581A - Playing actuator of wind instrument - Google Patents

Playing actuator of wind instrument Download PDF

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Publication number
JP2006003581A
JP2006003581A JP2004179335A JP2004179335A JP2006003581A JP 2006003581 A JP2006003581 A JP 2006003581A JP 2004179335 A JP2004179335 A JP 2004179335A JP 2004179335 A JP2004179335 A JP 2004179335A JP 2006003581 A JP2006003581 A JP 2006003581A
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JP
Japan
Prior art keywords
air
valve
vibration
actuator
wind instrument
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2004179335A
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Japanese (ja)
Inventor
Teruhiro Goto
照博 後藤
Original Assignee
Toyota Motor Corp
トヨタ自動車株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toyota Motor Corp, トヨタ自動車株式会社 filed Critical Toyota Motor Corp
Priority to JP2004179335A priority Critical patent/JP2006003581A/en
Publication of JP2006003581A publication Critical patent/JP2006003581A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G10MUSICAL INSTRUMENTS; ACOUSTICS
    • G10HELECTROPHONIC MUSICAL INSTRUMENTS
    • G10H2230/00General physical, ergonomic or hardware implementation of electrophonic musical tools or instruments, e.g. shape or architecture
    • G10H2230/045Special instrument [spint], i.e. mimicking the ergonomy, shape, sound or other characteristic of a specific acoustic musical instrument category
    • G10H2230/155Spint wind instrument, i.e. mimicking musical wind instrument features; Electrophonic aspects of acoustic wind instruments; MIDI-like control therefor.
    • G10H2230/171Spint brass mouthpiece, i.e. mimicking brass-like instruments equipped with a cupped mouthpiece, e.g. allowing it to be played like a brass instrument, with lip controlled sound generation as in an acoustic brass instrument; Embouchure sensor or MIDI interfaces therefor
    • G10H2230/175Spint trumpet, i.e. mimicking cylindrical bore brass instruments, e.g. bugle

Abstract

PROBLEM TO BE SOLVED: To realize an actuator for playing an actual wind instrument on behalf of a person.
The performance actuator includes air supply channels 53 and 44 for supplying air to the air outlet 55 of the wind instrument 18, air supply channels 53 and 44, and an air supply flow by vibrating the air supply channels 53 and 44. A vibration valve 46 that changes the air resistance of the paths 53 and 44 and a drive device 47 that vibrates the vibration valve 46 at the frequency of the musical instrument sound that the wind instrument 18 wants to generate are provided.
According to this performance actuator, it is possible to obtain the same phenomenon as when the performer blows air into the wind instrument 18 while vibrating the lips, and the musical tone having the intended scale can be stably generated from the wind instrument 18.
[Selection] Figure 2

Description

  The present invention relates to an actuator for playing a wind instrument.

Performance devices that play piano on behalf of people have been developed. However, an actuator for playing a wind instrument on behalf of a person has not yet been realized.
Patent Document 1 describes a musical tone control device that detects the state of the lips of a player who plays a wind instrument and electrically reproduces the instrument sound using the detected data. Japanese Patent Application Laid-Open No. 2004-228561 describes a musical sound synthesizer that electrically synthesizes and reproduces musical instrument sounds corresponding to the degree of lip tightening when a performer plays a wind instrument. Neither the musical tone control device of Patent Literature 1 nor the musical tone synthesis device of Patent Literature 2 actually play a wind instrument.

Japanese Patent Laid-Open No. 9-6352 Japanese Patent Laid-Open No. 5-19770

  The present invention realizes an actuator that plays an actual wind instrument on behalf of a person.

A wind instrument player vibrates the lips while blowing air into the mouthpiece. At this time, the performer adjusts the vibration frequency of the lips by changing the hardness of the lips so that the musical instrument sound (musical sound) of the desired scale is obtained from the wind instrument. The present inventor also tried to play a wind instrument with artificial lips having variable hardness. However, it was difficult to reproduce the delicate movements of the performers' lips, and it was not possible to stably generate musical sounds.
The performance actuator of the present invention has succeeded in overcoming the failure and stably generating a musical sound from an actual wind instrument, and an air supply flow path for supplying air to the air outlet of the wind instrument, and an air supply A vibration valve that is interposed in the flow path and changes the air resistance of the air supply flow path by vibrating and a drive device that vibrates the vibration valve at the frequency of the musical instrument sound that is desired to be generated from the wind instrument.
The “mouth part” here is not limited to the actual mouth part of an actual wind instrument. Including instruments installed on wind instruments in place of actual mouthpieces (the same shall apply hereinafter).
According to this performance actuator, it is possible to obtain the same phenomenon as when the performer blows air into the wind instrument while vibrating the lips, and the musical tone of the intended scale can be stably generated from the wind instrument.

It is preferable to add a means for changing the length of the outlet.
If the length of the nozzle part can be adjusted, the resonance frequency of the nozzle part and the resonance frequency of the resonance part of the wind instrument (the part where the tube length is adjusted) can be matched. It is possible to generate a beautifully resonated musical sound.
When a person plays an actual wind instrument, the length of the mouthpiece cannot usually be changed. If an artificial actuator that changes the length of the outlet is used, a performance that cannot be performed by a person becomes possible.

It is preferable that the vibration valve vibrates from the vibration center to both sides, and the air resistance changes symmetrically according to the displacement from the vibration center.
In this case, the frequency of the pressure change in the wind instrument is twice the frequency of the vibration valve. The vibration valve can be vibrated at a frequency that is half the frequency of the musical sound, and the frequency of the vibration valve can be reduced.

The vibration valve preferably reduces the air resistance as the vibration valve is displaced from the vibration center. In this case, it is preferable that the drive device that vibrates the vibration valve at the frequency of the musical instrument sound is capable of adjusting not only the frequency of the vibration valve but also the amplitude of the vibration valve.
By adjusting the frequency of the vibration valve, it is possible to adjust the scale of the musical sound that is generated, and it is possible to adjust the volume of the musical sound that is generated by adjusting the amplitude of the vibration valve.

A vibration valve may be one that minimizes air resistance at the center of vibration and increases air resistance as it is displaced from the center of vibration, but conversely makes air resistance substantially infinite at the center of vibration (ie, air It is preferable that the air resistance decreases as the supply channel is closed) and the displacement from the center of vibration decreases.
In this case, a crisp performance is possible.

The trumpet is provided with three pistons for scale adjustment, and the trombone is provided with a slide part for scale adjustment. It is preferable that an artificial hand for operating these scale adjusting operation sections is added.
The frequency of the change in the amount of air blown into the wind instrument and the resonance frequency of the resonance part of the wind instrument can be matched. It is possible to generate a beautifully resonated musical sound.

It is preferable that a throttle valve for adjusting the flow rate of air passing through the air supply flow path is added.
The volume can be adjusted by adjusting the flow rate of air passing through the air supply flow path using the throttle valve. In order to adjust the sound volume, adjusting the amplitude of the vibration valve and adjusting the air flow rate using a throttle valve may be used in combination. The volume adjustment range increases.

The preferred embodiment of this invention is illustrated.
(Mode 1) The on-off valve has a main body that the air supply flow path traverses, and a sleeve that is driven by an actuator to reciprocate inside the main body (Mode 2). An exiting site is formed.
(Mode 3) Between the sleeve main body and the bulging part, a transition part whose diameter continuously changes is provided.
(Mode 4) When the sleeve slides, the bulging portion changes the passage area of the air supply flow path.

An embodiment of a performance actuator 10 embodying the present invention will be described with reference to the drawings.
As shown in FIG. 1, the performance actuator 10 includes an air cylinder 14, a pressure reducing valve 15, a throttle valve 16, an air supply passage 13, an air blowing actuator 12, finger actuators 24, 25 and 26, and artificial fingers 30 and 31. 32, a control circuit 17, a computer 22, and an interface 21.
As shown in FIG. 2, the air blowing actuator 12 includes an opening / closing valve 42, a slider portion 43, and a pipe 44. The on-off valve 42 includes a valve main body 45, a sleeve 46, a valve actuator 47, and a spring 48. The valve body 45 is formed with an air passage 53 that allows the inlet port 51 and the outlet port 52 to communicate with each other, and a guide hole 45 a having a circular cross section orthogonal to the air passage 53. The air supply flow path 13 is connected to the inlet port 51. The sleeve 46 is formed with a shaft portion 46 a, an opening / closing portion 49 bulging from the shaft portion 46 a, and a guide portion 59 bulging from the shaft portion 46 a with the opening / closing portion 49 interposed therebetween. The opening / closing part 49 and the guide part 59 have a circular cross section. The opening / closing part 49 is formed with a transition part 49a that reaches the maximum diameter of the opening / closing part 49 while gradually changing from the shaft part 46a. The guide part 59 guides the sleeve 46 in the axial direction by slidingly contacting the guide hole 45a. One end of the sleeve 46 is attached to the valve actuator 47. The spring 48 is interposed between the guide portion 59 on the counter valve actuator 47 side and the end portion of the guide hole 45a. In the state where the sleeve 46 is disposed at the position shown in FIG. 2, the opening / closing part 46 a closes the air flow path 53.
The valve actuator 47 is connected to the control circuit 17 and drives the sleeve 46 with a built-in solenoid. Although described later in detail, the control circuit 17 outputs a drive signal to the valve actuator 47. The valve actuator 47 to which the drive signal is input moves the sleeve 46 to the counter valve actuator 47 side. FIG. 3 illustrates a state in which the sleeve 46 has moved to the counter valve actuator 47 side. In this state, the spring 48 is contracted by being pushed by the sleeve 46, and the open / close portion 46a of the sleeve 46 is moved from the closed position, whereby the air flow path 53 is opened. When the current of the drive signal input to the valve actuator 47 is reversed, the sleeve 46 moves to the valve actuator 47 side to close the air flow path 53 and further moves to the valve actuator 47 side to open the air flow path 53.

The slider portion 43 includes a slider 56, a drive gear 58, a motor 66, and a mouthpiece (blowout portion) 55. The slider 56 includes a columnar slider body 56a and a slider gear 56b provided at one end of the slider body 56a. A screw 56c is formed on the outer peripheral surface of the slider body 56a. The slider 56 is formed with a hole 61 penetrating in the axial direction. The mouthpiece 55 is used in place of the actual mouthpiece of the trumpet 18, and is inserted into the mouthpiece mounting portion 18 a of the trumpet 18. A screw 55 a is formed on the inner peripheral surface of the mouthpiece 55. The slider 56 is screwed into the mouthpiece 55 by using the screw 55a and the screw 56c of the slider body 56a. Therefore, when the slider 56 is rotated, the slider 56 moves forward and backward with respect to the mouthpiece 55.
The drive gear 58 is coupled to the rotation shaft of the motor 66 and is engaged with the slider gear 56 b of the slider 56. The motor 66 is connected to the control circuit 17. FIG. 2 illustrates a state in which the slider 56 moves forward and enters the front air chamber 57 of the mouthpiece 55 deeply. FIG. 3 shows a state in which the slider 56 is retracted. As the slider 56 moves forward, the volume of the front air chamber 57 decreases and the length decreases. When the slider 56 moves backward, the volume of the front air chamber 57 increases and the length increases.
One end 44 a of the pipe 44 is fixed to the outlet port 52 of the opening / closing valve 42. The other end 44 b of the pipe 44 is inserted into the through hole 61 of the slider 56. The air that has flowed out of the outlet port 52 passes through the pipe 44 and flows into the front air chamber 57 of the mouthpiece 55. When the slider 56 moves back and forth, the slider 56 moves relative to the pipe 44.
The opening / closing valve 42 and the motor 66 of the slider portion 43 are supported by a support member (not shown) coupled to the trumpet 18.

As shown in FIG. 1, the air supply passage 13 connects an air cylinder 14 and an air blowing actuator 12. The pressure reducing valve 15 and the throttle valve 16 are interposed in the air supply flow path 13. High pressure air is accumulated in the air cylinder 14. Instead of the air cylinder 14, a device capable of supplying high-pressure air (for example, an air pump) may be employed.
The computer 22 is connected to the air blowing actuator 12 and the finger actuators 24, 25, and 26 via the control circuit 17. The computer 22 is connected to the pressure reducing valve 15 and the throttle valve 16 via the interface 21.
The pressure reducing valve 15 is controlled by the computer 22 to reduce the pressure of the air flowing out from the air cylinder 14 to a predetermined value. The throttle valve 16 is also controlled by the computer 22 and adjusts the flow rate of air supplied to the air blowing actuator 12.
The artificial fingers 30, 31, and 32 are connected to the plungers 24a, 25a, and 26a of the finger actuators 24, 25, and 26, respectively. The tip portions of the artificial fingers 30, 31, and 32 are disposed at positions that contact the pistons 63, 64, and 65 of the trumpet 18. When the plungers 24a, 25a, and 26a of the finger actuators 24, 25, and 26 are expanded and contracted, the pistons 63, 64, and 65 are operated (pressed and returned) by the artificial fingers 30, 31, and 32. By adjusting the amount of expansion / contraction of the plungers 24a, 25a, 26a of the finger actuators 24, 25, 26, the pistons 63, 64, 65 can be not only fully pressed but also half pressed. Various types of finger actuators 24, 25, and 26 (for example, pneumatic drive, hydraulic drive, motor drive, solenoid drive, etc.) can be used.
A storage device 23 is connected to the computer 22. The storage device 23 stores time-series data for performing the performance with the trumpet 18. Specifically, the flow rate of air supplied to the inlet port 51 of the opening / closing valve 42 of the performance actuator 10, the frequency and amplitude of the sleeve 46 of the opening / closing valve 42, the sliding amount of the slider 56 of the slider portion 43, and the finger actuator The expansion / contraction amounts of the plungers 24a, 25a, and 26a of 24, 25, and 26 are stored in time series.

When the valve actuator 47 of the opening / closing valve 42 vibrates the sleeve 46 while supplying air to the inlet port 51 of the opening / closing valve 42, the air flow path 53 is opened / closed, and the air supplied to the front air chamber 57 of the mouthpiece 55. The pressure of oscillates. In this case, the frequency of the air pressure change is twice the frequency of the sleeve 46. For example, if the frequency of the sleeve 46 is 100 Hz, the frequency of the pressure change of the air supplied to the front air chamber 57 is 200 Hz. Since the frequency of the air pressure change in the front air chamber 57 and the frequency of the sleeve 46 have such a relationship, the frequency of the sleeve 46 can be reduced.
When the pressure in the front air chamber 57 vibrates, the trumpet 18 emits a musical tone having that frequency. For example, a “do” tone is emitted. The amplitude of the air pressure fluctuation in the mouthpiece 55 is proportional to the supplied air flow rate. Accordingly, when the flow rate of air supplied to the mouthpiece 55 is increased by controlling the throttle valve 16, the volume of sound generated by the trumpet 18 increases. When the flow rate of supplied air is decreased, the volume of sound generated by the trumpet 18 decreases. For example, if the air flow rate is increased while the “le” tone is being emitted, the volume of the “re” increases. Even if the amplitude of the sleeve 46 of the opening / closing valve 42 is changed, the amount of air supplied to the front air chamber 47 can be adjusted. For example, when the amplitude of the sleeve 46 is reduced, the opening area of the on-off valve 42 is reduced. Therefore, the amount of supplied air is reduced. By controlling both the throttle valve 16 and the open / close valve 42 simultaneously, the air flow rate can be adjusted more finely.
As described above, the opening / closing part 49 of the sleeve 46 of the opening / closing valve 42 is provided with the transition part 49a. Various changes in the pressure of the air supplied from the opening / closing valve 42 to the mouthpiece 55 can be finely adjusted by selecting various shapes of the transition portion 49a. For example, when the transition portion 49a is lengthened in the axial direction, when the opening / closing valve 42 is opened / closed, switching of opening / closing of the air flow path 53 does not occur abruptly, so that the rise / fall of the air pressure change becomes gentle ( The shape of the peaks and valleys of pressure fluctuations becomes gentle.) The shape of the transition part 49a is not limited to the linear shape as shown in FIGS. For example, the transition part 49a can be formed by a curve, a combination of a curve and a straight line, or the like. By selecting the shape of the transition portion 49a, the music generated by the trumpet 18 can be finely tuned.

When the pistons 63, 64, 65 are operated (pressed down), the tube length of the resonance part of the trumpet 18 is adjusted, and the resonance frequency of the trumpet 18 changes. When the air frequency in the mouthpiece 55 and the resonance frequency of the trumpet 18 match, a beautifully resonated musical sound is emitted.
When the length of the front air chamber 57 is adjusted by moving the slider 56 forward and backward with respect to the mouthpiece 55, the resonance frequency of the resonance portion (the portion where the tube length is adjusted) of the trumpet 10 and the front air chamber 57 are adjusted. The resonance frequency can be matched better. Therefore, if the length of the front air chamber 57 is adjusted, a more pleasantly resonated musical sound can be generated. When the performer blows air into the mouthpiece, the frequency of the lips and the hardness of the lips are adjusted, but the length of the front air chamber 57 is not adjusted. That is, according to the performance actuator 10 according to the present invention, the trumpet 18 can generate a resonated sound very finely by adjusting the resonance frequency more finely than that performed by the performer or higher.
When the computer 22 controls the performance actuator 10 based on the time-series data stored in the storage device 23, the trumpet 18 is played.

The sleeve 46 of the opening / closing valve 42 may not completely block the air flowing through the air flow path 53. That is, it may be repeated that the air flowing through the air flow path 53 has a large flow rate and a small flow rate.
The transition portions 49 a and 49 a of the sleeve 46 may not be formed symmetrically with respect to the vibration center of the sleeve 46.
When the present invention is applied to a wind instrument having a slider such as a trombone, an artificial arm is used instead of the artificial fingers 30, 31 and 32.

Specific examples of the present invention have been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.
In addition, the technical elements described in the present specification or drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology illustrated in the present specification or the drawings achieves a plurality of objects at the same time, and has technical utility by achieving one of the objects.

The system diagram of the performance actuator. Cross-sectional view of the air blowing actuator (open / close valve closed, slider advanced state). Cross section of air blowing actuator (open / close valve open, slider retracted).

Explanation of symbols

10: Performance actuator 12: Air blowing actuator 13: Air supply flow path 14: Air cylinder 15: Pressure reducing valve 16: Throttle valve 17: Control circuit 18: Trumpet 18a: Mouthpiece mounting portion 21: Interface 22: Computer 24 25, 26: Finger actuators 24a, 25a, 26a: Plungers 30, 31, 32: Artificial fingers 42: Open / close valve 43: Slider part 44: Pipe, 44a: One end, 44b: Other end 45: Valve body, 45a: Guide hole 46: Sleeve, 46a: Shaft part 47: Valve actuator 48: Spring 49: Opening / closing part, 49a: Transition part 51: Inlet port 52: Outlet port 53: Air flow path 55: Mouthpiece, 55a: Screw 56: Slider, 56a : Slider body, 56b: Slider gear, 56c: Screw 57: Front air 58: drive gear 59: Guide portion 61: through hole 63, 64, 65: Piston 66: motor


Claims (7)

  1. An air supply passage for supplying air to the wind outlet of the wind instrument,
    A vibration valve that is interposed in the air supply flow path and changes the air resistance of the air supply flow path by vibrating;
    A drive device that vibrates the vibration valve at the frequency of the instrument sound;
    A performance actuator comprising:
  2.   2. The performance actuator according to claim 1, further comprising means for changing the length of the air outlet.
  3.   3. The performance actuator according to claim 1, wherein the vibration valve vibrates from the vibration center to both sides, and the air resistance changes symmetrically according to the displacement from the vibration center.
  4. The vibration valve reduces the air resistance as it is displaced from the vibration center.
    4. The performance actuator according to claim 1, wherein the drive device is capable of adjusting an amplitude of the vibration valve.
  5.   5. The performance actuator according to claim 1, wherein the vibration valve has a substantially infinite air resistance at the center of vibration and decreases the air resistance as the vibration valve is displaced from the center of vibration.
  6.   6. The performance actuator according to claim 1, further comprising an artificial hand for operating a scale adjusting operation unit of the wind instrument.
  7.   The performance actuator according to any one of claims 1 to 6, further comprising a throttle valve for adjusting a flow rate of air passing through the air supply passage.
JP2004179335A 2004-06-17 2004-06-17 Playing actuator of wind instrument Pending JP2006003581A (en)

Priority Applications (1)

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JP2004179335A JP2006003581A (en) 2004-06-17 2004-06-17 Playing actuator of wind instrument

Applications Claiming Priority (1)

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JP2004179335A JP2006003581A (en) 2004-06-17 2004-06-17 Playing actuator of wind instrument

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008107604A (en) * 2006-10-26 2008-05-08 Yamaha Corp Actuator for playing brass-wind instrument
JP2009086575A (en) * 2007-10-03 2009-04-23 Yamaha Corp Apparatus for blowing wind instrument, and method for blowing wind instrument
JP2009139554A (en) * 2007-12-05 2009-06-25 Toyota Motor Corp Wind instrument playing device, and automatic playing method for wind instrument
US7683246B2 (en) 2007-05-28 2010-03-23 Yamaha Corporation Musical instrument playing actuator, play assisting mouthpiece, brass instrument, automatic playing apparatus, and play assisting apparatus

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008107604A (en) * 2006-10-26 2008-05-08 Yamaha Corp Actuator for playing brass-wind instrument
JP4518068B2 (en) * 2006-10-26 2010-08-04 ヤマハ株式会社 Brass instrument playing actuator
US7683246B2 (en) 2007-05-28 2010-03-23 Yamaha Corporation Musical instrument playing actuator, play assisting mouthpiece, brass instrument, automatic playing apparatus, and play assisting apparatus
JP2009086575A (en) * 2007-10-03 2009-04-23 Yamaha Corp Apparatus for blowing wind instrument, and method for blowing wind instrument
JP2009139554A (en) * 2007-12-05 2009-06-25 Toyota Motor Corp Wind instrument playing device, and automatic playing method for wind instrument

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