Automatic music playing system

Details Automatic music playing system Automatic music playing system

1974-10-07

1976-03-16

Hix, L. T.

Music

Instruments

84 113, 84 126, 84DIG12, G10H 102, G10H 504

Patent

active

039438139

ABSTRACT:
An automatic music playing system including a matrix circuit and manual play switches both connected to tone signal generators, each of said manual play switches consisting of a series connection of a resistor and a switch and a capacitor connected between the interconnection of said resistor and switch and the input terminal of a corresponding tone signal generator so that the output signals of said matrix circuit is absorbed in said capacitor when said switch is closed and an on-off switch operation triggers the corresponding tone signal generator, and each of said tone signal generators including two oscillating transistors connected with a feed-back loop and provided with a damping resistor.

REFERENCES:
patent: 3358068 (1967-12-01), Campbell, Jr.
patent: 3546355 (1970-12-01), Maynard
patent: 3743757 (1973-07-01), Okamoto
patent: R26521 (1969-02-01), Park
Donald O. Pederson et al., Introduction to Electronic Systems, Circuits, and Devices, McGraw-Hill Book Company, Copyright 1966, pp. 312-315.

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