Sound generator

Details Sound generator Sound generator

1983-09-07

1986-02-04

Isen, Forester W.

Music

Instruments

84 113, 340384E, 368255, G10H 102

Patent

active

045678065

ABSTRACT:
The sound generator applies an envelope to the note signal. Current to the sound producing element is controlled by a series transistor whose base is driven with a signal having a frequency corresponding to the musical note. The driving voltage applied to the base has a voltage amplitude corresponding to the voltage stored in a capacitor connected through a resistor and discharging through said resistor and the base of the transistor controlling the current to the sound producer.

REFERENCES:
patent: 4095502 (1978-06-01), Moore et al.
patent: 4250787 (1981-02-01), Segan et al.
patent: 4397211 (1983-08-01), Ferdinand
Folwell, "Novelty Bleeper Doorbell", Practical Electronics, Apr. 1979, pp. 38-39.

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