JPS6039917Y2 - electronic musical instruments - Google Patents

Description

[Detailed explanation of the invention] This invention can simultaneously extract rhythmic accompaniment tones and non-rhythmic accompaniment tones, and can be used for a series of rhythmic accompaniment tones. To provide an electronic musical instrument in which a tone circuit can be used even when the rhythm is not operating, thereby further enhancing performance effects.

Many electronic musical instruments, especially electronic organs, that have recently been commercially available have an automatic rhythm accompaniment function.

This automatic rhythm accompaniment function automatically performs rhythm accompaniment, which requires a high level of technique when playing an electronic organ.The performer simply presses the melody and chords that match the melody. It is now possible to perform with the rhythmic accompaniment sounds required.

For this reason, even beginners can enjoy highly advanced performances, and this has helped popularize electronic organs.

However, with the above-mentioned conventional electronic musical instruments that have an automatic rhythm accompaniment function, all of the accompaniment sounds are in rhythm, so the performance effect is unavoidably simple and the song lacks excitement. Ta.

This idea was made with this point in mind, and by simultaneously extracting rhythmic accompaniment sounds and non-rhythmic accompaniment sounds, a backing chorus can be added to the performance of a single electronic organ. To provide an electronic musical instrument which can obtain a performance effect similar to that of a musical accompaniment, and which can also use a tone color circuit used for a series of accompaniment sounds with a rhythm even when the rhythm is not operating.

In other words, the electronic musical instrument according to this invention separates the common output line of the sound source signal outputted by the performance operation of the accompaniment keyboard into two lines, and only one of the lines is opened and closed by the required rhythm pattern pulse from the rhythm pulse generator. By emitting sound through a gate circuit that is controlled, accompaniment sounds with a rhythm and accompaniment sounds without a rhythm are simultaneously extracted, and the sound is emitted in parallel with the gate circuit so as to bypass the gate circuit. A detour switch is provided in the device, the detour switch is linked with a drive switch that drives the rhythm pulse generator, and the detour switch is opened when the drive switch puts the rhythm pulse generator into an operating state. Features.

An embodiment circuit diagram of this invention will be shown below and explained in detail.

The attached drawing is a circuit diagram of one embodiment of this invention, and in the drawing,
1 is a sound source circuit that generates sound source signals of each scale frequency; 2 is a key switch circuit that selectively derives the sound source signal from the sound source circuit 1 by playing the accompaniment keyboard; 3 (31, 3
2, 33) are timbre circuits that suitably shape the input sound source signal and output a desired timbre waveform signal; 4 is a timbre switch circuit; 5 is a gate circuit; and 6 is a rhythm pattern pulse for the gate circuit 5. 7 is a drive switch for driving the rhythm pulse generator 6; 8 is a bypass switch connected in parallel to bypass the gate circuit 5 and linked to the drive switch 7; 9; indicates an amplifier, and 10 indicates a speaker.

According to the figure, the common output line A of the key switch circuit 2 is separated into two lines, a line B passing through two tone color circuits 31 and 32, and a line C passing through a tone color circuit 33, and the line B is connected to a gate circuit 5. is connected to the amplifier 9 via
The line C is also directly connected to the amplifier 9.

If you now play the accompaniment keyboard with the rhythm pulse generator 6 not driven (drive switch 7 open, detour switch 8 closed), the sound source signal output to line A will be transmitted to each tone circuit 31,
The sound is emitted as is via 32 and 33.

That is, the tone color circuits 31, 32, and 33 can all be used freely in this state.

Next, when the accompaniment keyboard is played with the rhythm pulse generator 6 driven (drive switch 7 closed, selector switch 8 open), the sound source signal output to line A is transmitted to each tone circuit 33.
The sound is emitted through the line C via the tone circuit 3.
The sound source signal taken out to the line B via the line B is carved by the gate circuit 5 in accordance with a required rhythm pattern pulse outputted from the rhythm pulse generator 6, and is emitted as a sound.

As described above, according to the electronic musical instrument of this invention, the performer simply presses the melody and the chords that match the melody, and the accompaniment tones with a rhythm and the accompaniment tones without a rhythm can be heard. Not only can rhythm accompaniment performance be performed at the same time, but also a performance effect similar to the addition of a backing chorus can be obtained at the same time, which has excellent effects such as further increasing the performance effect.

In addition, in this invention, a detour switch 8 that operates in conjunction with a drive switch 7 for driving the rhythm pulse generator 6 is provided in parallel so as to bypass the gate circuit 5, and the drive switch 7 disables the rhythm pulse generator 6. Since the detour switch 8 is closed when the rhythm is not active, the tone color circuits 31 and 32 associated with line B, in which the gate circuit 5 is interposed, also close the tone color circuit 33 associated with line C.
It can be used freely and has the effect of improving functionality.

[Brief explanation of the drawing]

The accompanying drawing is a circuit diagram of an embodiment of an electronic musical instrument according to this invention. In the figure, 1... sound source circuit, 2...
Key switch circuit for accompaniment keyboard, 3... Tone color circuit, 4... Tone switch circuit, 5...
Gate circuit, 6...Rhythm pulse generator, 7.
. . . drive switch, 8 . . . detour switch, 9 . . . amplifier.

Claims (1)

[Scope of utility model registration request] The common output line of the sound source signal output by the performance operation of the accompaniment keyboard is separated into two streams, and only one stream is released through a gate circuit whose opening and closing are controlled by the required rhythm pattern pulses from the rhythm pulse generator. By making a sound, an accompaniment sound with a rhythm and an accompaniment sound without a rhythm are extracted at the same time, and a detour switch is provided in parallel with the gate circuit so as to bypass the gate circuit, and the detour switch An electronic musical instrument, characterized in that: is linked to a drive switch that drives the rhythm pulse generator, and the detour switch is opened when the drive switch puts the rhythm pulse generator into an operating state.