Sound effects producer

Details Sound effects producer Sound effects producer

1978-06-28

1981-09-15

Pitts, Harold I.

Communications: electrical

Audible indication

Ultrasonic pest control

340384E, G08B 310

Patent

active

042900530

ABSTRACT:
Sound effects producer comprises a Zener diode with an inverse voltage impressing circuit connected to the cathode side of the Zener diode for generating a random noise output from the anode of the Zener diode. A speaker system is connected to the anode side of the Zener diode for changing the random output signal to a sound. A control circuit is built into the inverse voltage impressing circuit for controlling the output wave form of that circuit.

REFERENCES:
patent: 3220732 (1965-11-01), Pincus
patent: 3302128 (1967-01-01), Schoemeidl
patent: 3509492 (1970-04-01), Ponc et al.
patent: 3742379 (1973-06-01), McLean
patent: 3873937 (1975-03-01), Lindstrum
patent: 4103258 (1978-07-01), Iida

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