Integrated circuit for an electronic musical instrument

Details Integrated circuit for an electronic musical instrument Integrated circuit for an electronic musical instrument

1976-08-27

1978-09-26

Schaefer, Robert K.

Music

Instruments

84 113, 84 101, 357 42, 357 43, 357 51, G10H 106, H01L 2702

Patent

active

041161025

ABSTRACT:
The present invention is an integrated circuit for an electronic musical instrument comprising: a plurality of frequency divider chains receiving a plurality of input signals for dividing the frequencies of the input signals one after another and corresponding to a plurality of series of adjacent notes which are chromatically arranged in turn in a twelve-tone of a musical scale, respectively; keyer-gates for switching on and off the input signals and output signals of the frequency dividers of the frequency divider chains respectively; and adding means for adding at least two output signals of the keyer-gates which correspond to the adjacent notes chromatically arranged to each other, so as to produce output tone signals therefrom, respectively.

REFERENCES:
patent: 3489842 (1970-01-01), Ayres
patent: 3534144 (1970-10-01), Ring
patent: 3617598 (1971-11-01), Woody
patent: 3637915 (1972-01-01), Hirano
patent: 3755609 (1973-08-01), Millet
patent: 3835236 (1974-09-01), Adachi
patent: 3861263 (1975-01-01), Okudaira

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