JPS5837106Y2 - electronic wind instrument - Google Patents

Description

[Detailed Description of the Invention] This invention relates to an electronic wind instrument that has the shape of a wind instrument and is configured to generate musical tones electronically.

For example, as shown in FIG. 1, a plurality of keys 2 are provided on the surface of a tubular main body 1, one end of which has an opening 3, a speaker 4 at the other end, and a musical tone signal generator built into the main body 1. There is an electronic wind instrument.

In conventionally proposed electronic wind instruments of this kind, generally, the user holds the mouthpiece 3 in his mouth and operates the keys 2 with his fingers to generate a musical tone of a desired pitch, and at the same time detects the exhalation pressure. , which made it possible to control the volume.

However, with this alone, it is not possible to perform with sufficient musical expression as with ordinary wind instruments.

Therefore, we installed a movable mechanism that responds to the vertical movement of the lower jaw.
There has also been proposed a device in which the pitch of a musical tone can be controlled by varying a variable resistor based on the movement.

However, the structure is complex with many mechanical elements,
It had drawbacks such as being difficult to adjust and easily going awry.

This idea was made in view of the above points, and involves incorporating a pressure detection element into the mouthpiece of an electronic wind instrument, which detects the pressure of the lips, and controls the musical tone using the detection signal. This makes it possible to change the pitch, volume, timbre, etc. by changing the force with which the lips are held, just like a woodwind instrument.In addition, the structure is simple, does not require mechanical adjustment, and is a safe, high-quality electronic wind instrument. This is what we provide.

Hereinafter, embodiments of this invention will be described with reference to FIG. 2 and subsequent figures of the accompanying drawings.

Fig. 2 is a perspective view showing an embodiment of the mouthpiece of an electronic wind instrument according to this invention, Fig. 3 is a sectional view of the same side, and Fig. 4 is an enlarged sectional view taken along line A-A in Fig. 3. It is.

In these figures, reference numeral 5 denotes the mouthpiece body, and the material is made of, for example, flexible resin, and the mouthpiece part 6, which is held in the mouth and exhaled, is designed so that it can be easily held in the mouth and easily tightened with the lips. As shown in FIG. 4, the cross section is approximately elliptical.

7 is an exhaust hole, 8 is a breath pressure detection element, 9 is a breath inlet,
10 is an air flow passage.

Reference numeral 11 denotes a pressure detection element that detects the grip strength of the lips, that is, the pressure force of the lips, and as shown in the figure, it is the outer wall thick part 12 forming the air flow passage 10 and inside the peripheral thick part of the blowing mouth part 6. The insert is formed in the

The pressure detection element 11 is, for example, a piezoelectric element such as a piezoelectric ceramic that generates an electrical signal in response to a mechanical strain force, or a pressure-sensitive resistance element such as a nickel alloy wire whose resistance value changes depending on strain. , whose two poles are conductive wires 13.
14 is exposed on the outer surface of the outer wall thick portion 12 to extract a detection signal, and a lead electrode 15 is used to wire and connect to an amplifier circuit or the like within the main body of an electronic wind instrument as shown in FIG.

When the mouthpiece 5 configured in this manner is used as the mouthpiece of an electronic wind instrument such as the one shown in FIG. 6 is deformed and the thick portion 12 is deflected, and a signal corresponding to the strength is detected from the pressure detection element 11 embedded therein.

This detection signal controls the electric circuit that forms musical tones, and changes the pitch, volume, timbre, etc.

For example, if the pitch of a musical tone is raised based on a detection signal when the pressure of the lips increases, musical expression can be created in the same way as a wind instrument.

FIG. 5 is a block diagram showing an embodiment of a musical tone forming circuit for an electronic wind instrument according to this invention.

In the figure, 20 is a voltage controlled oscillator (hereinafter abbreviated as VCO) whose oscillation frequency changes depending on the control voltage from the key circuit 25, 21 is a voltage controlled filter (hereinafter abbreviated as VCF), and 22 is a voltage controlled variable Gain amplifier (hereinafter referred to as VCA)
).

A musical tone signal outputted by the VCA 22 is outputted from a speaker 24 via an amplifier 23.

When a key is pressed, a control voltage corresponding to the key is generated from the key circuit 25, and the oscillation frequency of the VCO 20 is controlled so as to obtain a predetermined pitch.

Further, the signal detected from the breath pressure detection element 8 is subjected to processing such as amplification by the volume control voltage generation circuit 26, and is applied to the VCA 22 as a volume control voltage signal.

Therefore, the volume of the musical tone is controlled by the exhalation pressure, and an envelope is formed.

Further, the detection signal from the pressure detection element 11 provided in the aforementioned mouthpiece 5 is amplified and processed by the control signal generation circuit 27, and is generated as a control voltage signal by, for example, the VCO 20.
is applied to control the pitch of musical tones.

In general, in the case of wind instruments, the tension of the lips increases as the pitch gets higher, and the tension of the lips becomes looser as the pitch gets lower.

Therefore, in the electronic wind instrument of the above embodiment, if the pitch is created by considering in advance the relationship between the pressure force of the lips and the pitch in normal performance, the pitch can be expressed using exactly the same playing method as a general wind instrument. It is possible to attach

Furthermore, the pitch up and down and the octave up and down can also be controlled by the compression force of the lips.

In addition, the detection signal of the pressure detection element in this invention causes the VCF 21 and VCA 2 to be detected as shown by the broken line in FIG.
2 may be controlled to change the tone or volume.

It goes without saying that this invention can also be applied to electronic wind instruments having a sound source circuit using a frequency dividing circuit and an opening/closing circuit.

Furthermore, the electronic wind instrument is not limited to the shape shown in FIG. 1, but may also be applied to one equipped with a keyboard, as shown in FIG. 6, for example.

Furthermore, an amplifier, a speaker, etc. may be provided separately from the main body of the musical instrument.

As mentioned above, according to this idea, like a wind instrument,
Since the pitch of the -note and -note can be created by the pressing force of the keys and lips, it becomes possible to add delicate expressions in glitsandos, etc.

Furthermore, it is also possible to slightly raise or lower the pitch, for example, for meri to shaku or kari.

Furthermore, the timbre and volume can be changed by the pressure of the lips, allowing for highly expressive performances.

[Brief explanation of the drawing]

FIG. 1 is an external view showing an example of an electronic wind instrument, FIG. 2 is a perspective view showing an embodiment of the mouthpiece of the electronic wind instrument according to this invention, FIG. 3 is a side sectional view thereof, and FIG. 3 is a cross-sectional view taken along line A-A in FIG. 3, FIG. 5 is a block diagram showing an embodiment of the musical tone forming circuit of an electronic wind instrument according to this invention, and FIG. 6 is an example of an electronic wind instrument equipped with a keyboard. FIG. 1... Instrument body, 3, 5... Utata mouth, 4
...Speaker, 11...Pressure detection element.

Claims (1)

[Scope of Claim for Utility Model Registration] In an electronic wind instrument that is an electronic instrument shaped like a wind instrument, a pressure detection element is provided at a position on the outer wall of the mouthpiece where it can be held by the lips, and the element detects the compression force of the lips. The pitch of the musical tone is determined by this detection signal. An electronic wind instrument characterized by controlling tone, volume, etc.