JPH07302082A - Taisho lyre with incorporated electronic musical instrument - Google Patents

Abstract

PURPOSE:To enjoy an ordinary musical performance, a musical performance backed with a full band or orchestra, etc., without connecting any equipment outside. CONSTITUTION:The TAISHO lyre is provided with the electronic musical instrument composed of a means (pickup 3 and sound volume adjusting circuit) which picks up and converts a sound generated by the vibration of strings 2 expended on the TAISHO lyre 1 into an electric signal, amplifies it to a specific level, and output the amplified signal and a microcomputer consisting of a CPU which is connected by a data bus, a program memory stored with a program for generating a specific musical sound, and a RAM for temporarily storing data for the execution of various processes, and a speaker 9 which radiates the mixed signal of the electric signal outputted from the electronic musical instrument and the electric signal outputted from the speaker 9; and a musical performance wherein the sound of the TAISHO lyre generated by the vibration of the strings 2 and sounds of various musical instruments generated by the electronic musical instrument are mixed can be enjoyed.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic musical instrument built-in Taisho koto, for example, to an electronic musical instrument built-in Taisho koto suitable for practicing a musical composition by one person.

[0002]

2. Description of the Related Art There is a case in which a Taisho koto is used to practice music. However, the conventional Taisho koto has no electrical structure, and either resonates the vibration of the string in the box part that constitutes the Taisho koto body to produce a sound, or simply picks up the vibration of the string electrically. The signal was simply amplified and output to the outside.

[0003]

Therefore, conventionally, in order to practice the Taisho koto while playing the actual music, some device is connected to the outside or some audio device is used even if nothing is connected. I needed to play a song.

The present invention has been made in view of the above problems, and an object of the present invention is to make it possible to enjoy a normal performance and a performance of a Taisho koto with a full band or an orchestra as a back, without connecting any equipment to the outside. And

[0005]

In the electronic musical instrument built-in Taisho koto of the present invention, the sound generated by the vibration of the string stretched on the Taisho koto is converted into an electric signal, amplified to a predetermined level, and output. An electronic sound generating means, an electronic musical instrument for electronically generating and outputting musical tones of various musical instruments different from the musical tones generated by the strings, an electric signal output from the electronic musical instrument, and the electronic sound generating means And a speaker that converts the electric signal mixed with the output electric signal into sound and emits the sound.

Another feature of the present invention is that
The electronic musical instrument is configured to be able to supply music data using a ROM card or a floppy disk, and is also configured to generate an oscillating sound to be used as an aid for tuning the Taisho koto. ing.

Another feature of the present invention is that a mixing circuit is provided for balancing the signal sound output from the electronic musical instrument and the signal sound output from the electronic sound generating means. There is.

[0008]

Since the present invention has the above-mentioned technical means, the sound of the Taisho koto generated by vibrating the strings can be independently generated so as to function as only the Taisho koto, or the sound of the Taisho koto and the electronic musical instrument. By mixing the sounds of various musical instruments generated in (1) and emitting the sound, it becomes possible to enjoy an orchestra-like performance without connecting any other musical instrument or supply.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the Taisho koto with a built-in electronic musical instrument of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a Taisho koto showing an embodiment of the present invention, and FIG. 2 is a block diagram showing a schematic configuration of an electric circuit portion.

As shown in FIG. 1, the Taisho koto body 1 of this embodiment is provided with a string 2, a pickup 3 for detecting the vibration of the string 2 as analog information, and an accompaniment pattern as digital information. A card slot 5 for mounting the ROM card 4 and an electronic musical instrument operation panel 20
And an operation panel 21 for Taisho Koto. The operation panel 20 for the electronic musical instrument and the operation panel 21 for the Taisho koto
Is provided for designating various conditions for the built-in electronic circuit.

Further, the Taisho koto with a built-in electronic musical instrument of this embodiment is
The electronic musical instrument circuit is provided, and a mixing section 7 that mixes the output signals from the electronic musical instrument circuit and the pickup 3, an amplifier circuit 8 that amplifies the signal mixed by the mixing section 7, and the amplifier circuit 8 are provided. And a speaker 9 which produces a sound based on the electric signal amplified by.

The pickup 3 is provided with two for the high-pitched sound portion of the string 2 and one for the low-pitched sound portion, detects the change in the magnetic field caused by the vibration of the string 2, and outputs it as an analog signal. is there.

The electronic musical instrument circuit includes a CPU 22, a program memory 23, a musical tone waveform memory 24, a RAM 25, an automatic performance data memory 26, a tone generator circuit 27, an electronic musical instrument panel interface circuit 28, a Taisho koto panel interface circuit 29, and a MIDI interface circuit. 30, R
An OM card interface circuit 33 and a D / A converter 31 are provided.

The program memory 23 stores a control processing program for performing accompaniment. The musical tone waveform memory 24 stores information about musical tone waveforms of various musical instruments such as a drum and a bass necessary for accompaniment. The RAM 25 is for temporarily storing data and the like when executing various arithmetic processes.

The automatic performance data memory 26 is a ROM in which some rhythm patterns and the like are stored in advance. The tone generator circuit 27 is a circuit which has a plurality of parallel tone generation channels and generates a digital tone signal from the tone waveform data read from the tone waveform memory 24 and the accompaniment data read from the automatic performance data memory 26.

Panel interface circuit 28 for electronic musical instrument
Is a circuit that is connected to the electronic musical instrument operation panel 20 and reads an instruction from the electronic musical instrument operation panel 20.

Further, the MIDI interface circuit 30
Is for outputting the performance data read from the automatic performance data memory 26 to an external MIDI compatible device, or conversely for inputting performance data from an external MIDI compatible device.

The performance data input from an external MIDI-compatible device can be processed for accompaniment in the same manner as the data read from the automatic performance data memory 26 or the ROM card 4. The D / A converter 31 is for converting a digital signal output from the tone generator circuit 27 into an analog signal. ROM card interface circuit 33
Is the CPU that uses the performance data read from the ROM card 4.
22 is provided for supplying.

The electronic musical instrument operation panel 20 has a rhythm volume switch 51 for adjusting the volume of an accompaniment pattern generated by the electronic musical instrument circuit, a tempo switch 52 for adjusting the tempo of the pattern, a pattern selection, etc. Select switch 54 for changing the automatic performance data memory 26 and the ROM card 4 to be selected as accompaniment data.
And a display unit 59. Further, although not shown, a balance automatic adjustment switch for instructing execution of automatic volume balance adjustment is also provided.

The rhythm volume switch 51, the tempo switch 52, and the select switch 54 are each composed of a pair of button switches, and are configured to increase the volume and change the tempo by an up / down instruction. There is.

Each of the changeover switch 56 and the automatic balance adjustment switch is composed of one button switch,
The configuration is such that the selection contents are changed in order. The display unit 59 is a two-digit number display window consisting of two sets of 7-segment LEDs. The display unit 59 displays the setting contents according to the operation of each switch.

Next, the processing contents of the CPU 22 will be described. FIG. 3 shows the main routine. CPU22
When the power is turned on, first, initialization processing is executed (step P1). In this initialization process, the RAM 25
Clears the memory contents of, and initializes the sound source status (rhythm volume, tempo, transpose, rhythm pattern select, part mute settings, etc.). In this initial setting, assuming that the volume of Taisho Koto is the reference value, the rhythm volume is initially set in consideration of the balance with the reference value.

Next, switch event processing is executed (step P2). In this process, the operating state of each switch of the electronic musical instrument operation panel 20 is scanned, the setting state of the sound source is changed accordingly, and the setting contents by the operated switch are displayed on the display unit 59 as two-digit numbers. Display with.

As a result, the player can set an arbitrary rhythm pattern or rhythm volume by moving the numbers up or down while checking the numbers displayed on the display section 59. .

After the sound source setting by the performer is completed, the MIDI process (step P3) is performed, and then the automatic performance process (step P4) is performed.

The automatic performance process is exactly the same as that performed by an ordinary rhythm box or electronic musical instrument, and the process will be briefly described below. That is, according to the setting of the rhythm pattern select, the automatic performance data memory 2
Data of the accompaniment pattern is read out from either 6 or the ROM card 4, and the tone waveform is read from the tone waveform memory 24 in accordance with the note-on data.

Next, in consideration of the rhythm volume, tempo, transpose, part mute setting, etc. set by the above switch event processing and the volume level determined by the note-on data itself, the sound source circuit 27 becomes vacant one by one. Set the tone data including the envelope for the channel.

On the other hand, when note-off data is read, the volume level of the channel for which note-off is instructed by this data is set to "0". Sound source circuit 2
Based on the musical tone data set according to the note-on data in this manner, 7 outputs a digital signal that changes drum-specifically, and stops the output in accordance with the note-off instruction. The digital signal thus output is
The signal is converted into an analog signal by the D / A converter 31, amplified by the amplifier circuit 8, and emitted from the speaker 9. In this way, it functions as a rhythm box.

The function of Taisho Koto is executed irrespective of the processing by the CPU 22. That is, the vibration of the strings 2 detected by the pickup 3 is given to the mixing unit 7 as an analog signal and mixed with the accompaniment pattern converted into an analog signal by the D / A converter 31.

At this time, the volume of the Taisho koto is adjusted to the volume intended by the performer by passing through the volume adjusting circuit 32 before mixing. If the accompaniment pattern is not selected, it can be used as a simple Taisho koto.

The Taisho koto with a built-in electronic musical instrument of this embodiment executes other processings as necessary in addition to the above processings (step P5). The processes of steps P2 to P5 are sequentially repeated until the power is turned off. In this embodiment, in particular, as other processing performed in step P5, processing for automatically adjusting the volume of the Taisho koto performance and the volume of the rhythm pattern to an ideal balance is performed.

Next, the balance automatic adjustment processing will be described with reference to the flowchart of FIG. In this process,
First, the automatic adjustment request flag FLG is checked (step P1), and if it is off, the processing routine is exited without executing the following processing.

On the other hand, if the result of determination in step P1 is that the automatic adjustment request flag FLG is on, the detection signal associated with the performance of Taisho koto played from the volume adjustment circuit 32 is read (step P2).

Next, the rhythm volume value set by the above-mentioned switch event process is read (step P3). Then, an ideal Taisho-koto sound volume value is obtained for the rhythm volume value, and the balance table recorded in advance in the data area of the program memory 23 is referred to (step P4). It is divided by the input signal to calculate the amplification factor (step P5). That is, (amplification factor) = (table value) /
(Input value) is calculated. Then, the gain of the operational amplifier (not shown) is adjusted based on the calculated gain.

When the balance adjustment is completed in this way, a process for turning off the automatic adjustment request flag FLG is performed (step P7), and this process is terminated. Finally, the automatic adjustment request flag FLG is turned off because if the flag FLG remains on, the volume will be automatically adjusted to a predetermined balance at any time during a performance. This is to prevent the performance being monotonous. The table referred to in step P4 may have different values for each rhythm pattern, or may be settable in the system setting mode or the like.

[0036]

As described above, according to the present invention, the sound generated by the vibration of the string stretched on the Taisho koto is converted into an electric signal, which is amplified to a predetermined level and output. In addition, an electronic musical instrument that electronically generates and outputs musical tones of various musical instruments different from the musical tones produced by the strings is provided, and the electric signals output from the electronic musical instruments and the strings stretched over the Taisho koto Since it was made possible to mix the electric signal generated from the sound of the sound and emit it, you can play as usual without providing any other equipment, or play with a full band or orchestra as a background. It is possible to provide a Taisho koto that can be enjoyed. You can also enjoy the functionality of Taisho Koto.

[Brief description of drawings]

FIG. 1 is a perspective view of a Taisho koto showing an embodiment of the present invention.

FIG. 2 is a block diagram showing details of an electric circuit portion of the Taisho koto of the present invention.

FIG. 3 is a flowchart showing processing of a main routine.

FIG. 4 is a flowchart showing a process of a balance automatic adjustment routine.

[Explanation of symbols]

 1 Taisho Koto body 2 String 3 Pickup 4 ROM card 5 Card slot 6 Electronic sound source circuit 7 Mixing section 8 Amplifying circuit 9 Speaker 20 Electronic musical instrument operation panel 21 Taisho koto operating panel 22 CPU 23 Program memory 24 Music waveform memory 25 RAM 26 Automatic performance Data memory 27 Sound source circuit 28 Electronic musical instrument panel interface circuit 29 Taisho koto panel interface circuit 30 MIDI interface circuit 31 D / A converter 32 Volume control circuit 33 ROM card interface circuit

Claims (3)

[Claims] 1. Electronic sound generating means for converting a sound generated by vibrating a string stretched on a Taisho koto into an electric signal, amplifying the sound to a predetermined level and outputting the electric signal, and a musical sound generated by the string. , An electronic musical instrument that electronically generates and outputs musical tones of various musical instruments, and an electric signal that is a mixture of the electric signal output from the electronic musical instrument and the electric signal output from the electronic sound generating means. A Taisho koto with a built-in electronic musical instrument, characterized in that it is equipped with a speaker that converts the sound into a sound. 2. The electronic musical instrument can supply music data by using a ROM card or a floppy disk, and can generate an auxiliary oscillating sound for tuning the Taisho harp. The Taisho koto with a built-in electronic musical instrument according to claim 1, wherein the Taisho koto has a built-in electronic musical instrument. 3. The mixing circuit according to claim 1, further comprising a mixing circuit for balancing the signal sound output from the electronic musical instrument and the signal sound output from the electronic sound generating means. Taisho koto with a built-in electronic musical instrument.