Audio signal processing circuit for compressing or expanding aud

Details Audio signal processing circuit for compressing or expanding aud Audio signal processing circuit for compressing or expanding aud

1996-06-05

1997-12-23

Kuntz, Curtis

Electrical audio signal processing systems and devices

Including amplitude or volume control

With amplitude compression/expansion

381120, H03G 700

Patent

active

057013535

ABSTRACT:
A DC voltage comparator is provided on the input side of an amplifier of an electric current controlled type. The DC voltage comparator compares the DC voltage on the input side of the amplifier and a reference voltage. Some electric currents are drawn and fed in response to the result of comparison with respect to the input and output sides of the amplifier, thereby controlling the output of the amplifier.

REFERENCES:
patent: 4061891 (1977-12-01), Pommer
patent: 5394474 (1995-02-01), Hirai et al.
patent: 5402498 (1995-03-01), Waller, Jr.

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