JPS5994794A - Musical instrument - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] FIELD OF THE INVENTION The present invention relates to musical instruments, and in particular to electronic musical instruments.

Electronic musical instruments are relatively easy to operate, and a single instrument can produce a variety of different sounds, and we have also developed instruments that allow you to play melodies even if you are not able to read music. Because of this, it is familiar to many people.

Among these electronic instruments, the electric guitar is particularly familiar, and it is a device that attaches a microphone to a regular guitar, picks up the guitar's sound with the microphone, amplifies it with an amplifier, and outputs it from a speaker. It is.

However, not only electric guitars but also guitars have complex chords and there are many types, so it is difficult to operate the fingers as expected. It was believed that it would take many days to completely memorize the words.

The present invention has been made from a lyrical perspective, and its purpose is to enable even beginners to play melody songs in a short time, and to enable beginners to easily play the chords if they understand the essence of guitar chords. The aim is to provide a realistic guitar-like instrument that can be played using the big winding method, arpeggio playing method, western depth method, etc., and whose output changes in proportion to the intensity of the string plucking. .

The gist of this is that there are seven strings strung on the guitar-shaped body, one is provided corresponding to each of the above strings, and the strength with which the corresponding string is played is measured. a detection device for detecting each string for each string, a plurality of switches provided in the neck portion of the main body and displaying the names of various chords, and a switch for switching the chord switch to a chord or a single note; There are switches on both sides of the neck to turn off notes, multiple pitch output circuits that each output a predetermined note, multiple switches displaying the names of the various chords mentioned above, and chords or single notes. a control circuit that selects the pitch output circuit corresponding to the conduction of the switch to be switched; an AND circuit that operates the pitch output circuit only when there is a re-output from the control circuit and the detection device; and the pitch output circuit. Mixing the output of the pitch output amplification circuit with a pitch output amplification circuit which widens the output of the pitch output circuit by 19 in proportion to the degree of string engagement detected by the detection device. a mixing circuit, an amplifier circuit that amplifies the output of the pitch output amplifier circuit and the output of the mixing l1lO path, a circuit that stops the operation of the various circuits when the switch for cutting off the sound is conductive, and the amplifier circuit The purpose is to create a speaker that outputs a signal.

Hereinafter, details of the present invention will be specifically explained with reference to the drawings.

Fig. 1 is an external view showing an actual example of the musical instrument according to the present invention, Fig. jfi2 is a partially broken explanatory view thereof, Fig. 3 is a partially enlarged explanatory view of the neck portion thereof, Fig. 4 FIG. 1 is an explanatory diagram showing a rotational arrangement of a musical instrument according to the present invention.

1, 2, and 3, 1 is a guitar-shaped main body, 2.21 is a string, 3.3 is a chord switch provided at the neck of the main body 1, and 3a. , 3a
is a single note/chord selection switch, 4.4 is a switch for cutting off the note provided on both sides of the neck, 5 is a bridge where strings 2.2' 10HH1 are attached, 6 is a note switch 7 is a switch that switches the power source to the desired power source and functions as a main switch. 8 is a g9fLn'J switch. 9 is a built-in guitar-shaped main body 1. speaker, 10
is the connection proton when using an external power supply, and 11 is the connection for connecting an external amplifier? Ft Oi 1 child, 12 is cover,
13 is a detection device, and 14.14 is a string stop.

Therefore, the main body 1 is manufactured in the shape of a guitar.
Seven iron strings 2.2' are strung on its upper surface. 7
Among the above strings 2.21 of the book, 6 wooden strings 2 are strings for operating the instrument according to the present invention as a normal guitar, and the outermost string 2' is one octave lower than the above strings 2, These are the strings used to operate the guitar.

The neck portion of the main body 1 is covered with a cover 12 that can be freely adjusted.The cover 12 is provided with a switch 3.3 for the number of chords on which the names of various chords are displayed. Switches 4.4 are provided on both sides of the neck to turn off the sound (so-called cutting).

Further, to make the sound vibrate, it is possible to make the sound vibrate by pressing and holding down the plurality of switches 3.3 on which the names of the various chords mentioned above are displayed, depending on the intensity.

Also, when adjusting the pitch of the sound, turn the switch 6 for adjusting the pitch of the sound and set it to the desired value, and you can easily adjust the pitch of the sound in the same way as using a capo. It can be changed.

Furthermore, the four buttons provided in the center of the neck are n[ note and chord changeover switches, and by pressing the single note and chord changeover switches 3a, 3a, the plurality of switches 3.3 are pressed. Instead of each Fred on a regular guitar, you can play a single note of 2.2' on each of the seven strings.

Next, by depressing the single note/chord changeover switches 3a, 3a, the chord displayed on the switch 3.3 is switched so that it can be played.

A detection device constituted by a detection circuit and a waveform shaping circuit is attached to the part of the neck of the main body 1 covered by the cover 12, and the above-mentioned seven strings ε: 1 This string 2.2' force < 6+H (When the string is struck, the strength with which each string is struck is detected in the stirrup.

Furthermore, a small amplifier and a speaker 9 are built inside the main body 1 formed in the shape of a guitar, and these can be operated by a desired one of three power sources: a dry battery, a battery, and a commercial power source. Furthermore, this selection can be easily made by switching the switch 7. Therefore, it can be taken outdoors and enjoyed.

In addition, if you connect an external amplifier to the connector 11 for connecting an external amplifier in the same way as a regular electric guitar, and take power from a regular commercial power supply via the external power connector 10, It is also possible to enjoy a more powerful performance.

Next, the 40th item will be explained.

In the figures, the same numbers as those in Figures 1, 2, and 3 indicate the same content summary.
3a and 13a are detection circuits that detect the intensity of the plucked string for each string when the string 2.2' is plucked, and output a pulse signal with a magnitude proportional to the intensity; 13b and 13b are the detection circuits described above; 15.15 a waveform shaping circuit that shapes the pulse signals output from the circuits 13a and 13a; 14 is a control circuit;
16.16 is an AND circuit, 16.16 is a pitch output circuit that produces sounds of a predetermined scale using a plurality of different pitches, 17.17 is a pitch output amplification circuit, 18 is a mixing circuit, 19 is an amplification circuit, and 20 is a speaker.

When the switch 3.3 on which the name of the quadruple chord is displayed and the single note/chord changeover switch 3as3a are pressed, the control circuit 14 switches the pressed switch 3.3.
Pitch output circuit 16.16 corresponding to 3 and 3a, 3a
AND times 1i;! connected to the input side of 115.1
A pulse signal will be input to 5.

The AND circuits 15 and 15 are configured such that pulse signals whose waveforms have been shaped by the control circuit 14 and the waveform shaping circuits 13b and 13b are input to the input terminals of the AND circuits 15 and 15, respectively.
Pitch output circuit 16.1 outputs a pulse signal only when both pulse signals from 4 and waveform shaping circuits 13b and 13b are input.
6 and operates a pitch output circuit 16.16 connected to the output side of the AND circuit 15.15.

Moreover, when the switch 4.4 for turning off the sound provided on both sides of the neck part is pressed, the operation stop circuit provided inside the mixing circuit 18 stops the operation of the mixing circuit 18. It is possible to cut the sound.

Now, if the pQ player wants to play the Am chord, press switch 3, which displays the name of the Δ chord.
3, and also play the string 2 that must be played to produce the above chord Δm during normal guitar playing.

- Accordingly, the vi control circuit 14 has to be operated according to the predetermined program number 16 with the above-mentioned static chord in order to output the tone corresponding to the selected 8m chord. The pulse No. 1i is input to the AND circuit 15.15 connected to the input side of the 16, while the detection circuits 12613a and 13a, which are arranged by the magnetic coil sensors of the detection devices 13a and 13a, are connected to the input side of the ordinary guitar. Detects whether string 2, which must be played when the above-mentioned static chord is played, is played at
When the string 2 is plucked, the plucked intensity is detected and a pulse F signal is output to the waveform shaping circuits 13b, 13b and the pitch output amplification circuits 17 and 17.

In the waveform shaping circuits 13b and 13b, the detection circuit 13a,
The pulse signal output from 13a is waveform-shaped by limiting the amplitude, etc., and the waveform-shaped pulse signal is input to AND circuit 15.15, while pitch output amplification circuit 1
7.17 performs amplification proportional to the magnitude of the pulse signals from the detection circuits 1+813a and 13a.

As a result, each pulse signal outputted from the AND circuit 15.15 control circuit 14 and the waveform shaping circuits 13b, 13b is manually inputted to the AND circuit 15.
．． Send a pulse signal to the pitch output circuit 16.16 corresponding to 15 to output the pitch output circuit 16.16! b, whereby the signal from the pitch output circuit 16.16 is input to the pitch output amplification circuit 11.11, where it is amplified in proportion to the intensity with which the string 2 is plucked, and then the mixing circuit 18
The signals are mixed, amplified by the amplifier circuit 19, and output from the subicator 20.

Note that the outermost part of the 7-wood strings 2.2', 21, is the most useful string when this instrument is operated as a bass guitar.

When operating as a bass guitar, press the single note/chord changeover switches 3a, 3a, then press the switch 3.3 for outputting the bass guitar sound, and then, By playing the outermost string 2' for operating the bass guitar, it can be used as a bass guitar. Therefore, since it is possible for one instrument to play the roles of a regular guitar and a bass guitar, it is possible for one person to play the same way as playing a regular guitar with the addition of a bass guitar. be.

Since the present invention is structured as described above, even beginners can enjoy playing the guitar in a short time by using the instrument according to the present invention. Since it plays the role of Reitsu's guitar and bass guitar, it can greatly expand its performance. What's more, you can easily change the perf, cut, etc. of the sound with just the touch of a switch, and you can also use it outdoors by using dry cells or batteries. It can be said that it is a musical instrument with a high product price of 4B.

Note that the present invention is not limited to the above-mentioned examples. That is, for example, in this embodiment, the string is an iron wire, and the intensity with which the string is plucked is detected by a detection circuit made up of a magnetic coil sensor, but other known devices having similar detection capabilities may be used. A devised circuit can also be used. It is also possible to memorize the chords of a desired melody and to sequentially display the switches corresponding to the chords of the melody using a lamp or the like. In this case, the operation of the mixing circuit was stopped and the sound was cut by suppressing the switch for cutting the sound. □However, the circuit that stops the operation is not limited to the mixing circuit only
Other circuits may be used as long as they can achieve the same effect, and other circuits may be used, such as the shape of the guitar body, the shape of the switch, the detection device, etc. of the present invention. The design can be freely changed within the scope of the intended purpose, and the present invention encompasses all of these.

[Brief explanation of drawings]

ff1llF is an external view showing one embodiment of the musical instrument according to the present invention, FIG. 2 is a partially cutaway explanatory view thereof, FIG. 3 is a partially enlarged explanatory view of the neck part, and FIG. FIG. 2 is an explanatory diagram showing the circuit configuration of the musical instrument according to the present invention.

Claims (1)

[Claims] 1) Seven strings are strung on a guitar-shaped body, and a device is provided corresponding to each of the above-mentioned strings, and is configured to measure the strength of each string when the corresponding string is played. a plurality of switches provided on the neck of the main body and displaying the names of various chords, a switch for switching the chord switch to a chord or a single note, and a switch on both sides of the neck. A switch to turn off the sound provided in the , a plurality of pitch output circuits each outputting a sound of a predetermined scale, a plurality of switches displaying the names of the various chords mentioned above, and a switch to switch to a chord or a single note. a control circuit that selects the corresponding pitch output circuit upon conduction; and an AND circuit that operates the pitch output circuit only when there are both outputs from the control circuit and the detection device;
a pitch output amplification circuit that amplifies the output of the pitch output circuit in proportion to the degree of plucked strength of the string detected by the twisting device; and the pitch output f
A mixing circuit that mixes the output of the i1-width circuit, an amplifier circuit that amplifies the output of the pitch output amplifier circuit and the output of the mixing circuit, and the operation of the various circuits above stops due to conduction of the switch for cutting off the sound. 1. A musical instrument, characterized in that it is comprised of a circuit that outputs a signal from the amplification circuit, and a speaker that outputs a signal from the amplification circuit. 2) The musical instrument according to claim 1 or 2, wherein the detection gH is a magnetic coil sensor. 3) The musical instrument according to claim 1, wherein each of the switches is an electronic switch using a semiconductor element. 4) The musical instrument according to claim 1, wherein each of the switches is a push button switch.