JPH0645996Y2 - Breath controller for electronic musical instruments - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] This invention detects breath pressure and converts it into an electrical signal,
The present invention relates to a breath controller for electronic musical instruments that freely controls musical sound elements such as volume.

[Conventional technology]

Along with the diversification of musical instruments, electronic musical instruments that can control tone color and volume not only with various control buttons but also with a breath controller (example: Shokai 58-118490)
Issue). This is configured so that breath pressure is detected by a breath pressure sensor and the detection signal is input to an electronic musical instrument as a control signal for controlling tone color, volume, etc. Since it holds the instrument body, it is effective in solving the inconvenience that changes in tone color, volume, etc. tend to be limited due to restrictions on the operation of control buttons, the number of buttons, etc.

[Problems to be solved by the invention]

However, since the conventional breath controller has a breath pressure sensor built into the mouthpiece and is used by hanging it around the neck with a string, the mouthpiece is held by hand from chest to mouth at each use. It must be done, and its operation is cumbersome, it does not look good, and when a large action is performed, the mouthpiece sways and turns to the back, so it cannot be held quickly in the mouth during use. There was a problem.

[Means for solving problems]

The breath controller for an electronic musical instrument according to the present invention has been made to solve the above-mentioned problems, and detects a mouthpiece having a breathing mouth and the breath blown into the mouthpiece and converts it into an electric signal. A sensor block having a breath pressure sensor whose electric signal is inputted to the electronic musical instrument as a control signal for controlling a musical tone element of the electronic musical instrument, and the sensor block which is connected vertically to the breathing port. A tube body that is connected to the sensor block and introduces breath blown into the breath pressure sensor of the sensor block,
A headband for fixing the sensor block to the head is provided.

[Action]

In this device, since the mouthpiece is always close to the mouth, it is easy to hold it, and because the headband mounts the sensor block on the head, it can be designed to look good and the stability of the sensor block is good. Is also good.

〔Example〕

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

FIG. 1 is a diagram showing a state in which the breath controller according to the present invention is mounted on the head, FIG. 2 is a sectional view of the controller, and FIG. 3 is a portable playing state of a keyboard type electronic musical instrument equipped with the controller. It is a figure. In these figures, a breath controller 1 is equipped with a mouthpiece 2, a sensor block 3, a flexible tube body 4 connecting these two 2, 3 to each other, and a sensor block 3 mounted on the player's temporal region. It is composed of a headband 5 to be fixed and a cord 6 for connecting the sensor block 3 to a keyboard type electronic musical instrument 7.

The mouthpiece 2 is formed integrally with a plastic or the like to form a substantially T-shaped shell structure, the base portion of which constitutes the gripping portion 2A, and the projection is provided on one side of the tip portion of the gripping portion 2A. The formed tubular portion constitutes the connecting portion 2B of the tubular body 4, and the tubular portion projecting on the other end of the grip portion 2A constitutes the air vent hole portion 2C. Then, the opening of the grip portion 2A forms a breathing port.

The sensor block 3 includes a case 10 having a sealed structure to which one end of the tube body 4 is connected, and a pressure which is arranged in the case 10 and whose peripheral portion is held by a support member 11 to communicate with the tube body 4. Diaphragm 13 forming chamber 12 and diaphragm 13
The mouthpiece 2 includes a magnet 14 fixed to the central portion of the surface of the device, a hall element 15 arranged corresponding to the magnet 14, a printed board 16 on which the hall element 15 is mounted, and the like. When air is blown from the portion 2A, the breath pressure is guided to the pressure chamber 12 through the pipe body 4 and the diaphragm 13
Is configured to deform. When the diaphragm 13 is deformed in this way, the distance between the magnet 14 and the hall element 15 changes, so that a hall voltage is generated in the hall element 15 in proportion to this. That is, the breath pressure is converted into an electric signal by the converting means (breath pressure sensor) in the sensor block 3, and the electric signal is inputted to the keyboard type electronic musical instrument 7 by the cord 6.

Since the case 10 is sealed, the air blown from the mouthpiece 2A of the mouthpiece 2 is discharged to the outside from the air vent hole 2C, and only the breath pressure passes through the tube body 4 and the pressure chamber 12
Be led to. Since this breath pressure is almost equal to the resistance of the air passing through the air vent hole 2C, the blow resistance is adjusted by changing the length 1 and the hole diameter d of the air vent hole 2C.

As shown in FIG. 3, the keyboard-type electronic musical instrument 7 is provided with a flat long box-shaped musical instrument housing 20, and a keyboard 21 consisting of a plurality of white keys and black keys, which also serves as a power source, on the surface of the housing 20. Volume knob 22,
Breath control knob 23, various waveform selection slide knobs 24, control buttons 25A, 2 for manually controlling musical sounds
5B and the like are provided so that the housing 20 can be suspended by a suspending band 26 during a portable performance.

FIG. 4 is a block diagram showing a tone processing circuit of the keyboard type electronic musical instrument 7, 30 is a voltage controlled variable frequency oscillator (hereinafter abbreviated as VCO), 31 is a voltage controlled variable filter (hereinafter referred to as VCF), 32 is a voltage-controlled variable gain amplifier (abbreviated as VCA hereafter), 33 is an amplifier, 34 is a speaker, and 35, 36 and 37 are V
A control waveform generator (hereinafter abbreviated as EG) for obtaining a control voltage waveform signal for controlling CO30, VCF31, VCA32, 38 is EG35, EG36, EG3
When the key 21 is pressed by the control circuit of 7, the voltage KV set for each key and the key pressing signal KON are generated, and the voltage KV becomes VCO30.
Then, KON is applied to EG35, EG36, and EG37, respectively. On the other hand, the breath pressure sensor in the sensor block is connected to the VCA32.

In such a circuit configuration, when the control button 25A, 25B is not operated by hand, and when the player plays the musical instrument by simply playing the key 21 without blowing the breath from the mouthpiece 2, the key pressing operation is performed. According to the control voltage waveform signal generated from EG35 in response to the applied voltage KV and key press signal KON.
The VCO30 is controlled to obtain the sound source signal, which is respectively EG36, E
VCF31 and VCA32, which are controlled by the control voltage waveform signal generated from G37, form a tone color and an envelope, and an amplifier 33 and a speaker 34 produce a sound.

Next, when breath is blown from the mouthpiece 2, the diaphragm 13 in the block sensor 3 is elastically deformed according to the breath pressure as described above, so that the Hall voltage corresponding to the deformation is generated in the Hall element 15, and this is changed. Applied as a control signal to VCA32. Then, the volume of the musical sound produced from the speaker 34 changes according to the breath pressure. In addition, when the control button 25A is manually operated, the pitch changes, and when operated at a fast cycle, the vibrato effect can be added freely.
The vibrato depth can be varied by the pressing depth (or rotation angle) of 25A. On the other hand, the timbre can be freely changed by operating the control button 25B, and a so-called wah-wah effect can be added.

[Effect of device]

As described above, the breath controller for an electronic musical instrument according to the present invention guides the breath pressure blown into the mouthpiece to the sensor block by the tube, and attaches the sensor block to the head by the headband. Because I configured
The mouthpiece is always close to the mouth and it is easy to hold, and if the sensor block is fixed to the head, the stability is good and you can concentrate on playing electronic musical instruments without being distracted by the breath controller. It is also crisp and has a good appearance.

In addition, especially in the axial direction of the tube body with respect to the breathing port,
In other words, when connected straight, when the mouthpiece is held in the mouth, the tube is in the direction of moving away from the player's face, so if the tube is lengthened, the tube will shake when you shake your head. On the contrary, if it is made of a soft material when it is shortened, there is a problem that the tube bends in the middle and becomes an obstacle, whereas in this invention, the tube is perpendicular to the breathing port. Because it is connected,
When the sensor block is mounted on the head and the mouthpiece is held, it is possible to prevent the above-described inconvenience that the tube body shakes or becomes an obstacle because the tube body is not separated from the player's face.

[Brief description of drawings]

FIG. 1 is a view showing a use state of a breath controller according to the present invention, FIG. 2 is a cross-sectional view of the controller, and FIG. 3 is a view showing a portable playing state of a keyboard type electronic musical instrument equipped with the controller, and FIG. The figure is a block diagram showing a tone processing circuit of the electronic musical instrument. 1 ... Breath controller, 2 ... Mouthpiece, 3 ...
... Sensor block, 4 ... Tube, 5 ... Headband,
7 ... Keyboard type electronic musical instrument.

Claims (1)

[Scope of utility model registration request] 1. A mouthpiece having a mouthpiece and a breath blown into the mouthpiece is detected and converted into an electric signal, and the electric signal serves as a control signal for controlling a musical tone element of the electronic musical instrument. A sensor block having a breath pressure sensor that is input to the sensor block, and is connected to the sensor block at the same time as being perpendicularly connected to the breathing port, and introduces the blown breath into the breath pressure sensor of the sensor block. And a headband for fixing the sensor block to the head.