JPH0715028Y2 - Electronic string instrument input device - Google Patents

Description

[Detailed Description of the Invention] [Technical field of the invention] This invention is an input of an electronic stringed instrument, which is made to have a feeling of performance by operations similar to those of a natural stringed instrument such as pulling and plucking a string in an electronic stringed instrument It relates to the device.

[Prior Art and its Problems] Traditional natural string instruments generally have a mechanism in which the vibration of the strings vibrates the surrounding air to produce a sound, and the strings are squeezed by pulling the strings or playing the strings. It was vibrating. When simulating such a natural stringed instrument with an electronic stringed instrument, it is an important factor that it is similar in terms of performance operation.

In recent years, JP-A-53-97412 has been released as an "electronic ambulance instrument", while following the playing technique of ambulance instruments such as a guitar, it uses a purely electric oscillator like a music synthesizer as a sound source. However, there are some that produce a variety of musical sounds. In this system, both ends of the pick key are supported by holders and are rotated in the left and right directions. The vibration caused by this rotation is detected by the magnetic head, the peak voltage is obtained, the sampling voltage is generated, and the modulation voltage generator is triggered. By doing so, a sound signal proportional to the playing strength is generated, and a musical sound is emitted from the speaker.

However, in this method, immediately after the state where the finger is in contact with the pick key is changed to the state where the pick key is released, the pick key shakes to the maximum and the sound starts to sound, so that a guitar playing method similar to the actual guitar playing method is possible. In this electronic ambulatory musical instrument, there is a drawback in that the electric circuit used has a complicated structure such as using a magnet head in order to detect the maximum vibration of the pick key, resulting in a high cost.

[Objective of the Invention] The present invention was made in view of the above-mentioned circumstances, and its purpose is to have a simple structure and immediately after playing a string so that the playing form is similar to that of a traditional natural stringed instrument. It is intended to provide an input device for an electronic stringed instrument capable of emitting a musical sound.

[Summary of the Invention] In order to achieve the above-mentioned object, the invention is a string information input means for accepting a string operation, and a string tone input operation when the string information input means performs a string operation. And a musical tone generation instructing means for instructing the generation of the musical tone. The string information inputting means includes a bulging portion made of a flexible member provided above a predetermined contact pattern, and the bulging portion. And a contact portion provided on the lower surface of the bulge portion so as to face the contact pattern, and projecting on the upper surface of the bulging portion. When bulged in a direction perpendicular to the protruding direction, the bulging portion elastically deforms. The musical tone generation control means, the musical piece generation control means comprising: a resilient piece that brings the contact portion into contact with the contact pattern.
The main point is that the generation of the musical tone is instructed at a timing corresponding to the time when the contact portion and the contact pattern move from the contact state to the separated state.

[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4. FIG. 1 is an external view of an input device for an electronic string instrument,
FIG. 2 is a side sectional view of the main part of the input device, FIG. 3 is a circuit configuration diagram of musical tone generation, and FIG. 4 is a time chart of a break contact portion.

[Structure of Embodiment] As shown in FIG. 1, the electronic string instrument input device 1 includes a tone color information input section 3 for inputting tone color information on a musical instrument body 2.
A string information input unit 6 for inputting string information by a string, a tremolo information input unit 7 for inputting a tremolo signal for adding vibrato etc. to a generated musical tone, and a fingerboard 8 for inputting scale information. The scale information input section 9 provided above is provided. The parameter setting switch 3a is a push button type switch for setting basic parameters required for performance. A cable K or the like is detachably attached to the musical instrument body 2. This cable K is for connecting to a musical sound generating device 19 described later.

The scale information input section 9 is an input section used when designating a predetermined pitch, and has six rows corresponding to the six strings of a guitar and n columns (n columns orthogonal to this row corresponding to many frets). 22) is generally configured in the form of a matrix divided by and, and the pitch designating switch PSW10 is formed by a push switch in the space 10a ...
When the pitch designating switches PSW10 ... As shown in FIG. 3 are turned on by pressing the space portions 10a ..., a predetermined pitch corresponding to the pitch designating switch PSW10. It is specified.

On the other hand, the string information input section 6 is provided on the decorative plate 4 provided on the musical instrument body 2. The decorative plate 4 is a substantially rectangular plate-like body made of, for example, a synthetic resin, and the decorative plate 4 is provided with six slits 4a in the direction corresponding to the six strings of the guitar. A flexible member, for example, an elastic piece 5 made of rubber or the like is inserted into each of the slits 4a. This piece 5 ...
As shown in FIG. 2 (A), a thin plate-like pick 5a that is played by a finger or a pick piece is formed on the upper portion.
A fulcrum portion 5b whose tip is circular in cross section is provided below, and a bulge portion 5c bulging toward the left and right is provided at a position slightly higher than the fulcrum portion 5b. Support points 5b of these picks 5a
And the bulging portion 5c is integrally molded. The bulged portion 5c ...
A pair of contact points 11, 11 are provided on the lower side of the fulcrum section 5b, and on both sides of the fulcrum section 5b. Contact pattern 12,
There are twelve. Therefore, the pick 5a of the bullet piece 5
As shown in FIG. 2 (B), when the pick 5a is pressed by the finger 13, the bulging portion 5c elastically deforms accordingly, and one of the contact portions 11, 11 has a corresponding contact pattern 1
Electrically contacts 2 and 12 and emits a signal. Next, as shown in FIG. 2 (C), the pressed fingers 13 are picked 5a.
When the pick 5a is removed, the pick 5a is elastically restored, and accordingly, the bulging portion 5c is also elastically restored. As a result, the one contact portion 11 is separated from the contact pattern 12. In this way, each contact part 11 and each contact pattern 12 are triggered switch TSW14.
On / off action. This trigger switch TSW1
The on / off signal 4 is input to the musical tone generating device 19 as a string information signal through a break contact portion 15 as shown in FIG. 3 to emit a musical tone.

As shown in FIG. 3, the break contact portion 15 has the same number of T-type flip-flop circuits (TF / F) 16 as the trigger switches TSW14 and inverters (I) connected in parallel.
V) 17 and an AND gate (AND) 18 which operates by using the output of the T-type flip-flop circuit TF / F16 and the output of the inverter IV17 as inputs. One end of the trigger switch TSW14 is connected to + V on the power supply side, and the other end is grounded via a resistor R, and the T-type flip-flop circuit TF / F16 of the break contact portion 15 and the inverter are connected.
It is entered in IV17. This T-type flip-flop circuit
The clock signal φ is input to the T terminal of the TF / F16,
When the trigger switch TSW14 is turned on, T ₁ and T _{2 in} FIG.
As shown in, the T-type flip-flop circuit TF / F16 takes in the "1" signal given to the input terminal (D terminal) when the clock signal φ is given (at the timing T ₂ ) and AND gates. Output "1" (high level signal) to AND18. At this time, the inverter IV17 is output as "1" to "0" (low level signal), so that the AND gate AN
The output of D18 is "0" and is not input to the musical sound generator 19. Next trigger switch TSW14
If There turned off, as shown in FIG. 4 in T _3, T _4, the inverter IV17 is changed to "1" from "0", whereas, T-type flip-flop circuit TF / F16 somewhat by the timing portion of φ signal delay varies from "1" at the point of timing T ₄ to "0", the φ signal T-type flip-flop circuit between (during the time ranging from the timing T ₃ to time T ₄₎ only delayed timing content of The "1" of the TF / F16 and the "1" of the inverter IV17 coincide with each other, and the signal of "1" is input from the AND gate AND18 to the musical sound generating device 19 as a break contact signal.

The musical tone generating device 19 includes a CPU 20 as a central control device, a musical tone generating circuit 21 that generates a predetermined musical tone under the control of the CPU 20, and a D / that converts a digital signal output from the musical tone generating circuit 21 into an analog signal. It is composed of an A conversion circuit 22, an amplifier 23 for amplifying the analog signal, and a speaker 24 for emitting the signal amplified by the amplifier 23. Through the string information inputted through the break contact portion 15, the tone color information inputted by the parameter setting switch 3a, the tremolo information inputted by the tremolo arm 7a, and the pitch designation switch PSW10 on the fingerboard 8. The scale information input by the CPU 20 in the tone generator 19
The CPU 20 inputs signals based on these various kinds of information to the musical sound generating circuit 21 and outputs predetermined musical sounds from the speaker 24.

[Operation of the Embodiment] An operation procedure of the electronic string instrument configured as described above will be described.

First, after pressing and operating the parameter setting switch 3a in advance to set and specify a predetermined parameter such as a tone color, the pitch designation switch PSW10 on the fret of the necessary scale tone is pressed with one finger, whereby predetermined scale information is obtained. If you try to get CP
The pressed position of the pitch designating switch PSW10 pressed by the action of U20 is detected, and the detected data is sent from the scale fret matrix circuit to the CPU20 as scale information.

Next, under such a condition, when the playing piece 5 of the string information input section 6 is played with the fingers 13 as shown in FIG. 2 (B),
The pick 5a of the bullet piece 5 is pressed and deformed by the fingers 13, and the bulging portion 5c provided on the bullet piece 5 is elastically deformed and one contact portion is formed.
11 electrically contacts the corresponding contact pattern 12. The make-on signal of the trigger switch TSW14 composed of the contact portion 11 and the contact pattern 12 is input to the T-type flip-flop circuit TF / F16 and also to the inverter IV17. Of this input, a T-type flip-flop circuit
The TF / F16 outputs a "1" signal to the AND gate AND18 at the time of T ₂ according to the φ signal input from the T terminal. On the other hand, the input to the inverter IV17 is the trigger switch TSW14.
Since "0" is output at T ₁ of make-on of, AND gate AND18 does not output to CPU20 while keeping the closed state. Therefore, when the pick 5a is pressed and the one contact portion 11 and the corresponding contact pattern 12 are first electrically contacted with each other, the string information signal is not input to the CPU 20. Is never emitted. Next, pick the fingers 13 as shown in Fig. 2 (c).
When separated from 5a, the contact portions 11 that are in contact with each other are separated from the contact pattern 12 due to the elastic restoration of the bulging portion 5c provided on the replay piece 5. At that moment, ie
When the contact portion 11 is at T ₃ apart from the contact pattern 12, the trigger switch TSW14 transmits an off signal as a string information signal to the T-type flip-flop circuit TF / F16 and the inverter IV17. With this off signal, the inverter IV17 inputs the "1" signal to the AND gate AND18. On the other hand, the output "0" of the T-type flip-flop circuit TF / F14 is carried on the φ signal.
Since it is output at T ₄ , "1" remains in the AND gate AND18 until now, and this "1" signal and inverter
The AND gate AND18 is opened by the "1" signal of IV17, and the string information signal is input to the CPU20. That is,
The string information is output to the CPU 20 when the bullet piece 5 is separated from the pressed state. A tone generation circuit 21 based on this string information
Generates a predetermined tone, and converts this tone into the D / A conversion circuit 22,
Sound is emitted from the speaker 24 via the amplifier 23.

As described above, the bullet piece information input section 6 is provided with the playing piece 5 formed of a flexible member, and the playing piece 5 is played as if playing an actual guitar. 1
After one of the contact patterns 1 and 11 and the contact patterns 12 and 12 is electrically contacted with each other, at the moment when the contact portion 11 and the contact pattern 12 which are in contact with each other move to the separated state from each other, the string information signal is transmitted. Musical tone generator 19 via break contact portion 15
Since it is input to, the musical sound will be emitted when the piece 5 is released like the actual guitar performance, so that the performance operation can be performed similar to the actual guitar performance. Became.

[Advantages of the Invention] As described in detail above, the invention provides the string information input means with the bulging portion made of a flexible member provided above the predetermined contact pattern and the lower surface of the bulging portion. And a contact portion provided so as to face the contact pattern and protruding from the upper surface of the bulging portion, and elastically deforming the bulging portion when elastically played in a direction perpendicular to the protruding direction. The musical tone generation control means is configured to have a contact piece and an elastic piece for contacting the contact pattern, at a timing corresponding to a time point when the contact portion and the contact pattern shift from a contact state to a separated state. Since the generation of musical tones is instructed, it is possible to realize, with a simple structure, a musical performance pattern similar to that of a traditional natural string instrument, that is, a musical performance pattern in which a musical sound is emitted immediately after playing a string. Advantages that enable There is.

[Brief description of drawings]

FIG. 1 is an external view of an input device for an electronic string instrument according to an embodiment of the present invention, and FIG. 2 is a side sectional view of a main part of a string information input section of the input device for an electronic string instrument shown in FIG. ) Is a state before the finger touches the piece, (B) is a state when the finger is touched, (C)
Indicates the end of the playing. FIG. 3 is a block diagram of a musical tone generating circuit for connecting the input device of the electronic stringed instrument of FIG. 1 to generate a musical tone, and FIG. 4 is a time chart of a break contact portion used in the input device of the electronic stringed instrument of FIG. It is a chart. 1 ... Electronic string instrument input device, 2 ... Instrument body, 5 ...
Bullet piece, 5c ... bulging part, 6 ... string information input part, 9 ...
Scale information input section, 11 …… contact section, 12 …… contact pattern,
14 …… Trigger switch, 15 …… Break contact part.

Claims (1)

[Scope of utility model registration request] 1. A string information input unit for receiving a string operation, and a string operation performed by the string information input unit,
Musical tone generation instruction means for instructing to generate a musical sound of a specified pitch, and the string information input means is a bulge made of a flexible member provided above a predetermined contact pattern. And a contact portion provided on the lower surface of the bulging portion so as to face the contact pattern, and provided on the upper surface of the bulging portion so as to project. And a resilient piece for elastically deforming the outgoing portion to bring the contact portion into contact with the contact pattern, wherein the musical tone generation control means sets the contact portion and the contact pattern apart from the contact state. An input device for an electronic stringed instrument, characterized by instructing generation of the musical sound at a timing corresponding to a time point at which the musical instrument is transferred.