Electronic musical instrument using integrated circuit component

Details Electronic musical instrument using integrated circuit component Electronic musical instrument using integrated circuit component

1975-07-25

1977-05-24

Witkowski, Stanley J.

Music

Instruments

84 123, 84DIG23, G10H 100, G10H 506

Patent

active

040247864

ABSTRACT:
The embodiment of the invention disclosed herein is directed to an electronic keyboard musical instrument wherein all the audio frequency signal information is derived from an oscillator multi-frequency generator and frequency divider circuits formed by large scale integrated circuits. The divider circuits associated with various keys of the keyboard generate tone signal information for each of the particular notes of the various octaves. The integrated circuit unit has a plurality of frequency input terminals arranged for connection to the multi-frequency generator and a plurality of second input terminals arranged for connection to its associated key switch on the keyboard of the musical instrument. Actuation of the key switch on the keyboard will enable gate circuits to transfer output signal information from the associated divider into the audio-amplifier stages of the electronic musical instrument.

REFERENCES:
patent: 3236931 (1966-02-01), Freeman
patent: 3505461 (1970-04-01), Omura et al.
patent: 3534144 (1970-10-01), Ring
patent: 3535429 (1970-10-01), Uchiyama
patent: 3590131 (1971-06-01), Reyers
patent: 3626076 (1971-12-01), Uchiyama
patent: 3636231 (1972-01-01), Schrecongost et al.
patent: 3715443 (1973-02-01), Ishimura
patent: 3735012 (1973-05-01), Hirano
patent: 3748944 (1973-07-01), Schrecongost
patent: 3755609 (1973-08-01), Millet et al.
patent: 3821458 (1974-06-01), Schreier
R. G. Hibberd, Integrated Circuits, McGraw-Hill Book Co., Copyright 1969, pp. 1-12.

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