JPH1020852A - Electronic stringed instrument - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to make special playing, such as harmonics method, even if a fingerboard section has no actual strings and sound production is executed by determining pitches by pitch switches. SOLUTION: A string system 13 detects that the strings disposed in a string striking section are struck. A fingerboard system 12 scans the pitch switches disposed in correspondence to the strings in the respective frets of the fingerboard section and detects the on and off of the first contacts which turn on according to prescribed pressing displacement quantity and second contacts which turn on according to the pressing displacement quantity larger than the prescribed pressing displacement quantity. A CPU 11 stores the detection data inputted from the string system 13 and the fingerboard system 12 in a RAM 15 and references the detection data. When the CPU decides that only the first contacts are on, the CPU reads the program of the harmonics method out of a ROM 14 and commands the sound production processing of the harmonics method to a sound source 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to an electronic stringed instrument such as an electronic guitar.

[0002]

2. Description of the Related Art In a conventional electronic guitar, a pitch switch is provided on a fingerboard portion corresponding to each string and each fret position, and the fret position is detected by pressing a finger.
Some memory stores pitch data corresponding to the fret position in a memory. In such an electronic guitar, a musical performance is performed by reading out pitch data corresponding to a given string from a memory in accordance with the string of the given string and supplying the pitch data to a sound source for sounding.

[0003]

However, in the above-mentioned conventional electronic stringed musical instrument, the fingerboard is not provided with an actual string for determining the pitch, and the finger is turned on or off by the pitch switch. Since only information on the presence or absence of pressing is obtained, there is a problem that a special performance such as a harmonics playing method in which only harmonics are generated cannot be obtained by releasing the finger from the fingerboard simultaneously with the string. An object of the present invention is to provide a special performance such as a harmonics playing method even when the fingerboard does not have an actual string for determining a pitch, and the pitch is determined by a pitch switch to generate a sound. Is to do so.

[0004]

SUMMARY OF THE INVENTION According to the present invention, a plurality of strings provided on at least a string portion of a body having a string portion and a fingerboard portion including a plurality of frets, and the strings are struck. And a first contact point provided on each fret of the fingerboard in correspondence with a plurality of strings to specify a pitch, and turned on according to a predetermined amount of pressing displacement, and a predetermined contact point. A pitch switch having a second contact that is turned on in response to an amount of pressing displacement greater than the amount of pressing displacement, and a control for issuing different performance processing commands in accordance with the on / off state of the first and second contacts. And means. With such a configuration, the performance process of the normal playing style or the special playing style is performed according to the on / off state of the first and second contacts by the pressing operation of the finger on the fingerboard portion.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, first and second embodiments of an electronic stringed musical instrument according to the present invention will be described with reference to FIGS. As shown in FIG. 1A, a fingerboard 2 is attached to the main body 1 of the electronic guitar in each embodiment, and the fingerboard 2 is provided at an end 3 of the fingerboard 2 on the side of the main body 1 and at a center of the main body 1. Six strings 5 are stretched between the tail piece 4 and the tail piece 4. The speaker 6 is attached inside the main body 1. Also, 15 frets 7 (where FRET (0) is an open string) identified by fret numbers FRET (0) to FRET (14) are formed on the surface of the fingerboard portion 2. The fingerboard portion 2 is formed with six linear members 8 made of an elastic material corresponding to the six strings 5 so as to resemble the actual strings, and has a structure which is bent by pressing in the same manner as the actual strings. ing. Further, a pitch switch 9 corresponding to each string 5 is provided for each fret 7 inside the fingerboard portion 2 on the lower side of the linear member 8.

As shown in FIG. 1B, each pitch switch 9 has a contact 1 (first contact) between an elastic plate 2a forming the upper surface of the fingerboard 2 and a printed board 2b embedded therein. It is composed of two contacts including a first contact and a second contact. Each contact constitutes a switch with the conductive rubber 9a formed on the printed board 2b side and the conductive rubber 9b formed on the elastic plate 2a side. However, one contact 1
Indicates that the distance between the conductive rubbers 9a and 9b is small and the other contact 2
Is formed with a large gap between the conductive rubbers 9a and 9b. Therefore, any linear member 8 of any frets 7
Is pressed by a predetermined amount of displacement, the elastic plate 2a bends, and first, the conductive rubbers 9a and 9b of the contact 1 come into contact first and the contact 1 is turned on. When the linear member 8 is pressed with a larger displacement amount, the elastic plate 2a is further bent, and the conductive rubbers 9a and 9b of the contact 2 come into contact, and the contact 2 is turned on.

As shown in FIG. 2, a circuit block having a CPU 11 as a control means as a core is provided inside the electronic guitar. That is, the CPU 11 includes a fingerboard system 12, a string system 13, a ROM 14, a RAM 1
5. The sound source 16 is connected. Further, a sound system 17 is connected to the sound source 16. The fingerboard system 12 scans the pitch switch 9 of the fingerboard unit 2 in response to a command from the CPU 11, detects the on / off state of the contacts 1 and 2, and inputs it to the CPU 11. String system 13
Constitutes a string detecting means for detecting the string state of the string 5 in response to a command from the CPU 11 and inputting the string state to the CPU 11.
The ROM 14 is a storage unit that stores a program for controlling the operation of the CPU 11 and data to be referred to during execution of the program. The RAM 15 temporarily stores data processed by the CPU 11. The sound source 16 outputs a sound signal based on musical tone data including pitch data and the like provided from the CPU 11 and a sound generation processing command. The sound system 17 includes a D / A converter, an amplifier, a speaker, and the like (not shown), and emits sound in accordance with an acoustic signal from the sound source 16.

Next, the operation of the first embodiment will be described with reference to the flowchart of the CPU 11 shown in FIG.
In the first embodiment, the ROM 14 stores a program A for a normal playing style and a program B for a harmonic playing style. And in the initial state, the CP
The program A is read by U11.

The CPU 11 determines whether or not there is a string through the string system 13 (step S11). If there is no string, this flow ends. The fingerboard unit 2 is scanned via the control unit 12 (step S1).
2). Then, it is determined whether or not the contact 2 of each pitch switch 9 is on (step S13). If the contact 2 is off, it is determined whether the contact 1 of the pitch switch 9 is on (step S14). When the contact 1 is on, the program A is changed to the program B (step S1).
5) According to the overtone timbre data based on the program B,
The sound source 16 is instructed to perform a harmonic sounding process (step S16). Thereafter, the program is changed from the program B to the program A (step S17), and this flow is terminated.

On the other hand, when the contact 2 is turned on in step S13, the contact 1 of the pitch switch 9 is also naturally turned on. Therefore, the pitch data of the fret number is obtained by the tone color data based on the program A. Instructs the sound source 16 to generate a normal playing style (step S1).
8), end this flow. When the contact 1 is turned off in step S14, the tone data of the open string is also generated based on the tone data based on the program A.
To the normal tone generation process (step S1).
8), end this flow.

As described above, according to the first embodiment,
A different performance processing command is issued in accordance with the on / off state of the contact 1 and the contact 2 of the pitch switch 9, and when only the contact 1 is on, the program read from the ROM 14 is changed to perform the performance processing of the harmonic playing technique. Issue a command.
Therefore, even when the fingerboard 2 does not have an actual string for determining the pitch, and the pitch is determined by the pitch switch 9 to generate a sound, a special performance such as a harmonics playing technique can be performed.

In the first embodiment, the timbre data of the harmonic performance is stored in the ROM 14 in advance. However, the timbre data of the harmonic performance may be set by a user operation.

Next, the operation of the second embodiment will be described with reference to the flowchart of the CPU 11 shown in FIG.
In the second embodiment, an effector (not shown) such as a digital equalizer is provided in the sound source 16, and the normal playing method is set according to the setting data of this effector, for example, the setting data of the cutoff frequency of the digital equalizer. Alternatively, it is possible to perform a sound production process of harmonic playing. The setting data for the normal playing style and the harmonic playing style is R
It is stored in the OM 14 in advance, and in the initial state, it is the setting data of the normal playing style.

The CPU 11 determines whether or not there is a string through the string system 13 (step S21). If there is no string, this flow is terminated. The fingerboard unit 2 is scanned via the interface 12 (step S22). Then, it is determined whether or not the contact 2 of each pitch switch 9 is on (step S23). If the contact 2 is off, it is determined whether the contact 1 of the pitch switch 9 is on (step S24). When the contact 1 is on, the setting data of the effector is changed to the setting data of the harmonic performance (step S25), and the tone data of harmonics of the harmonic performance based on the setting data of the effector is used.
A sound generation process is instructed to the sound source 16 (step S2).
6). After that, the setting data of the harmonic playing style is changed to the setting data of the normal playing style (step S27), and the flow ends.

On the other hand, when the contact 2 is turned on in step S23, the contact 1 of the pitch switch 9 is also naturally turned on, so that the fret is generated by the timbre data based on the setting data of the normal playing style of the effector. A tone generation process is instructed to the sound source 16 with the pitch data of the number (step S28), and this flow ends. Step S
When the contact 1 is turned off at 24, the sound source 16 is instructed to generate sound by using the tone data of the open string in accordance with the tone data based on the setting data of the normal playing style of the effector (step S28). finish.

As described above, according to the second embodiment,
A different performance processing command is issued according to the on / off state of the contact 1 and the contact 2 of the pitch switch 9, and when only the contact 1 is on, the effect setting data is changed to perform the performance processing of the harmonic playing method. Issue a command. Therefore, even when the fingerboard 2 does not have an actual string for determining the pitch, and the pitch is determined by the pitch switch 9 to generate a sound, a special performance such as a harmonics playing technique can be performed.

In the second embodiment, the effector setting data of the harmonic playing method is stored in the ROM 14 in advance. However, the setting data may be set by a user operation.

In each of the above embodiments, the string 5 is provided on the string portion of the main body 1 of the electronic guitar, and the fingerboard portion 2 is not provided with the actual string, but the linear member 8 similar to the string is provided. However, a string may be stretched across the bullet string portion and the fingerboard portion 2. However, even in this case, the pitch is not determined by the vibration of the string, and the fingerboard 2
The pitch is determined by a pitch switch 9 provided inside.

In each of the above embodiments, the harmonic playing technique is taken as an example of the special playing technique.

[0019]

According to the present invention, the performance process of the normal playing style or the special playing style is performed according to the on / off state of the first and second contacts by the pressing operation of the finger on the fingerboard. Therefore, even when the fingerboard does not have an actual string for determining the pitch, and the pitch is determined by the pitch switch and the sound is generated, a special performance such as a harmonic playing technique can be performed.

[Brief description of the drawings]

FIGS. 1A and 1B are diagrams of an electronic guitar in each embodiment of the present invention, wherein FIG. 1A is a plan view thereof, and FIG. 1B is a cross-sectional view showing a structure of a pitch switch of a fingerboard.

FIG. 2 is a block diagram showing a system configuration inside the electronic guitar in FIG. 1;

FIG. 3 is a flowchart illustrating an operation of a CPU according to the first embodiment.

FIG. 4 is a flowchart illustrating an operation of a CPU according to the second embodiment.

[Explanation of symbols]

 11 CPU 12 Fingerboard System 13 String System 14 ROM 15 RAM 16 Sound Source 17 Sound System

Claims (8)

[Claims] 1. A plurality of strings provided on at least the bullet strings of a main body having a finger string section composed of a string string and a plurality of frets, and a string detection means for detecting that the strings are struck. A first contact point provided on each fret of the fingerboard portion in correspondence with the plurality of strings to specify a pitch, and turned on according to a predetermined pressing displacement amount, and the predetermined pressing displacement amount A pitch switch having a second contact that is turned on in response to a greater amount of pressing displacement, a control unit that issues a command for a different performance process depending on the on / off state of the first and second contacts, An electronic stringed instrument comprising: 2. The electronic stringed musical instrument according to claim 1, wherein said control means issues a command for a performance process of harmonic playing when only the first contact is on. 3. The control device according to claim 1, wherein the first and second contacts are turned on or off in accordance with an on-off state of the first and second contacts. 3. The electronic stringed musical instrument according to claim 1, wherein a sound processing is performed by reading a processing program. 4. The electronic stringed musical instrument according to claim 3, wherein the timbre data of the normal playing technique and the harmonic playing technique are stored in the storage means in advance. 5. The timbre data of the harmonic playing method,
4. The setting according to claim 3, wherein the setting is made by an operation means.
Electronic stringed instrument as described. 6. The control means changes setting data of an effector means for determining a performance of a normal playing technique or a harmonic playing technique in accordance with an on / off state of the first and second contacts. The electronic stringed musical instrument according to claim 1 or 2, wherein 7. The electronic stringed musical instrument according to claim 6, wherein the setting data of said effector means is stored in said storage means in advance. 8. The electronic stringed musical instrument according to claim 6, wherein the setting data of the effector means is set by operating means.