Digital circuit to regulate the gain of an amplifier stage

Details Digital circuit to regulate the gain of an amplifier stage Digital circuit to regulate the gain of an amplifier stage

1994-05-26

1997-02-25

Kuntz, Curtis

Electrical audio signal processing systems and devices

Including amplitude or volume control

Automatic

381104, 330278, H03G 300

Patent

active

056066252

ABSTRACT:
A digital circuit for controlling the gain of an amplifier stage of a coded signal receiving channel is provided. The circuit includes a peak detector coupled to the input terminal of the receiving channel through a coded signal rectifying circuit and a gain control stage. The gain control stage includes a digital comparator having two input terminals respectively connected to an output terminal of the peak detector and to a memory, and an output terminal coupled to a gain control terminal of the amplifier stage. The address selectable contents of the memory contain predetermined peak values in coded form.

REFERENCES:
patent: 4112384 (1978-09-01), Buchberger
patent: 4947133 (1990-08-01), Thomas
patent: 5029162 (1991-07-01), Epps
patent: 5134631 (1992-07-01), Kingston et al.

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