Automatic musical accompaniment playing system

Details Automatic musical accompaniment playing system Automatic musical accompaniment playing system

1986-08-22

1987-10-13

Witkowski, S. J.

Music

Instruments

84 119, 84DIG12, 84DIG22, G10H 106, G10H 142, G10H 700

Patent

active

046990399

ABSTRACT:
An automatic musical accompaniment playing system for use in an electronic musical instrument with an auto rhythm system changes a tone color of accompaniment tones when the state of operation of the auto rhythm system is changed. The automatic accompaniment playing system comprises a tempo clock generator for generating tempo clock pulses having a frequency proportional to a tempo of a rhythm to be generated and a register for storing a flag indicative of a state of operation of the auto rhythm system. The tempo clock pulses are counted by a tempo counter when the auto rhythm system is in operation, and the state of operation of the auto rhythm system is detected in accordance with the state of the flag. A memory stores two groups of tone color data, one of which is selected when the auto rhythm system is in operation, and the other of which is selected when the auto rhythm system is not in operation. One of the tone color data in the selected group is read from the memory in accordance with an output of a tone color selection switch. A tone signal generating circuit generates tones of a chord inputted through a keyboard in accordance with a count value of the tempo counter in a tone color designated by the read tone color data.

REFERENCES:
patent: 3882751 (1975-05-01), Tomisawa et al.
patent: 4417494 (1983-11-01), Nakada et al.
patent: 4433601 (1984-02-01), Hall et al.
patent: 4476766 (1984-10-01), Ishii
patent: 4624170 (1986-11-01), Ohno et al.

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