JPS599263Y2 - electronic musical instruments - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electronic musical instrument in which musical tone signals played by a keyboard are controlled by breath pressure.

Conventional electronic keyboard instruments that can be controlled by breath pressure utilize the breath that is exhaled by holding a mouthpiece connected to the instrument body through a flexible hose in the mouth.

Therefore, it is necessary to hold each piece in the mouth while playing, which not only looks bad but also makes it difficult to play.

Also, since there is only one mouthpiece that acts as a breath pressure detector,
When controlling only the volume of music, or controlling different parameters such as pitch and timbre, it was necessary to use a changeover switch.

This idea was made in view of the above points. A mouse control device having multiple breath pressure detectors is fixed to the chestnut instrument body having a keyboard section, and the output of the multiple breath pressure detectors is converted into a musical sound signal. By providing a distribution selection circuit that selectively distributes and supplies data to each control line that controls pitch, timbre, and volume, it is easy to play, and mouse control can be performed with a good performance appearance.Moreover, multiple musical sound parameters can be switched without the need for switching operations. This provides an electronic musical instrument that can be selectively controlled.

Embodiments of this invention will be described below with reference to the accompanying drawings.

FIG. 1 is a perspective view showing the appearance of an embodiment of an electronic musical instrument according to this invention.

In the figure, reference numeral 1 denotes a chestnut machine body, which has a keyboard section 2 at the front, and a volume knob 3 for controlling tone, volume, etc. is arranged on an inclined panel at the rear of the keyboard section 2.

4 is a mouse control device having a plurality of breath pressure detectors 5a to 5d; It is installed and fixed.

It is convenient to make the support 6 deformable or to make the mounting portion 7 of the support 6 rotatable relative to the musical instrument body 1, since the fixing position of the mouse control device 4 can be adjusted.

In this embodiment, when the player operates the keyboard section 2 to play and at the same time blows into any one or more of the breath pressure detectors 5a to 5d of the mouse control device 4, the breath pressure is detected. The device outputs an electrical signal depending on the breath pressure applied.

The musical tone signals played on the keyboard section 2 are controlled by the outputs of the breath pressure detectors 5a to 5d.

Therefore, musical tones can be controlled by breath pressure in a relaxed posture without having to directly hold the mouthpiece or the like in the mouth.

That is, in addition to keyboard operations, it is possible to control various musical tone signals.

It is particularly suitable for controlling the whistle-like tone called "Hyururun".

Figure 2 shows a breath pressure detector 5a used in this invention.
5d is a schematic explanatory diagram showing a specific example, in which 10 is the main body of the breath pressure detector, 11 is a ring-shaped permanent magnet attached to the main body 10, and 12 is a diaphragm that vibrates according to changes in breath pressure. ,
13 is fixed to the center of this diaphragm 12, and a permanent magnet 11
14 is a protective front screen provided in front of the diaphragm 12, 15 is a rectifier circuit, and 16 is a low-pass filter.

In the breath pressure detector constructed in this way, the diaphragm 12
When the coil 13 vibrates due to breath pressure, the permanent magnet 11
An alternating voltage is induced across the coil 13 in order to cut off the magnetic flux caused by this.

The alternating voltage induced in the coil 13 is rectified by a rectifier circuit 15, and further smoothed by a low-pass filter 16, to become a DC control output voltage according to changes in breath pressure.

Note that the part that induces an alternating voltage according to breath pressure is similar to an electromagnetic microphone, and may be used.

FIG. 3 is a block diagram showing an embodiment in which this invention is applied to a synthesizer type electronic musical instrument.

In the figure, 21 indicates the tone pitch voltage KV and key press signal KON according to the key press.
22 is a voltage-controlled oscillator (hereinafter referred to as "vCO") that generates a sound source signal, and 23 is a voltage-controlled filter (hereinafter referred to as "VCF") for shaping the tone.
24 is a voltage controlled amplifier (hereinafter referred to as rVCA) for controlling opening/closing and shaping the envelope, and 25 is a sound system consisting of speakers and the like.

Furthermore, 26. 27.28 is an arithmetic circuit, 29, 30
is a control waveform generator (hereinafter abbreviated as "EG") that generates an envelope signal of a control waveform in response to a key press signal KON.
, 31 to 33 are low frequency oscillators (hereinafter referred to as r) for generating modulation signals.
(abbreviated as LFO).

34 is a distribution selection connection circuit that mixes or selectively outputs the outputs of the breath pressure detectors 5a to 5d to each control line that controls the pitch, timbre, and volume of the music signal;
It is equipped with a select switch or a variable resistor, and the distribution selection and connections can be arbitrarily set in advance or during the performance.

The arithmetic circuits 26 and 27 can have an addition or multiplication function, but it is preferable that the arithmetic circuit 28 has a multiplication function so that the sound system 25 does not produce sound due to breath pressure alone.

There is no need to explain the operation as a synthesizer in detail, but the oscillation frequency of the VCO 1 is controlled by the pitch voltage KV corresponding to the key pressed from the keyboard circuit 21 to obtain a sound source signal of the pitch corresponding to the key. The VCF 23 and VCA 24 are controlled by the envelope signals generated from the EGs 29 and 30 in response to the key press signal KON to form a timbre shape and an envelope, and the resulting sound is produced by the sound system 25.

In this case, the distribution selection connection circuit 34 is directly connected to the calculation circuits 26, 27, 28 and further via the LFOs 31, 32, 33 to the breath pressure detector 5a according to its set state.
~5d output, LFO31, 32
, 33 change the oscillation frequency or the magnitude of the oscillation output, respectively, in response to a control signal from the distribution selection connection circuit 34, and guide the oscillation output to the arithmetic circuit.

Therefore, the calculation circuit 2 is directly connected to the distribution selection connection circuit 34.
6, 27. The control signal supplied to the keyboard section 28 changes the pitch voltage KV, the control waveform outputted from the EGs 29, 30, etc., thereby changing the pitch, timbre, and volume of the musical tone played by the keyboard section.

Further, from the distribution selection connection circuit 34, LFOs 31, 32,
Effects such as vibrato, timbre modulation, tremolo, etc. can be applied to the musical tone signal by the control signal supplied to 33.

Note that the number of breath pressure detectors provided in the mouse control device is not limited to four, and may be an appropriate number of two or more as necessary.

As explained above, according to this invention, the mouse control device is fixed to the main body of the electronic musical instrument, so there is no need to hold the mouthpiece in your mouth, making it easier to play and giving you a good playing appearance. It is possible to selectively control a plurality of musical tone parameters, namely pitch, timbre, and volume, making it possible to make performances by electronic musical instruments even richer in variety, and to enable delicate expression by the performer.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the appearance of one embodiment of this invention;
The figure is a schematic explanatory diagram showing a specific example of the breath pressure detector of this invention, and FIG. 3 is a block diagram showing an embodiment in which this invention is applied to a synthesizer. 1... Instrument body, 2... Keyboard section, 4.
...Mouse control device, 5a to 5d...
...Breath pressure detector, 6... Prop, 10...
... Breath pressure detector body, 11 ... Permanent magnet, 12
...Vibration plate, 13...Coil.

Claims (1)

[Scope of utility model registration request] A musical instrument body having a keyboard section, a mouse control device fixed to the upper part of the musical instrument body and having a plurality of breath pressure detectors, and outputs of the plurality of breath pressure detectors of the mouse control device, the pitch of the music signal, It includes a distribution selection circuit that selectively distributes and supplies timbre and volume to each control line, and controls each parameter of the pitch, timbre, and volume of the musical sound played on the keyboard section of the musical instrument body to the mouse control device. An electronic musical instrument that is selectively controlled by the outputs of multiple breath pressure detectors.