Digitally driven audio effects generator

Communications: electrical – Audible indication – Ultrasonic pest control

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3403111, G08B 2700

Patent

active

043750613

ABSTRACT:
A digitally driven audio effects generator includes a source of binary information and keyboard which provide digital information to a plurality of source or sink type binary drivers. A ladder matrix is coupled to the binary drivers and provides an output signal. An audio frequency signal generator responds to the keyboard and controls an interrupting switch which serrates the output signal at an audio frequency rate.

REFERENCES:
patent: 4237448 (1980-12-01), Weinberg
Elektor, May 1979, vol. 5, No. 5 "Musical Doorbell".
Electronics, Sep. 28, 1978, JSA, vol. 51, No. 20, "Designers Casebook".
E.T.I., Dec. 1980, vol. 9, No. 12, G.B., "Musical Doorbell".

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