Method and apparatus for controlling an audio signal level

Details Method and apparatus for controlling an audio signal level Method and apparatus for controlling an audio signal level

1998-09-18

2000-10-03

Mottola, Steven J.

Amplifiers

With semiconductor amplifying device

Including gain control means

330254, H03G 310

Patent

active

061278939

ABSTRACT:
A control circuit for controlling a level of an audio signal and transmitting the signal to an amplifier is described. The control circuit is based on an R-2R resistor network having a plurality of resistor nodes. A plurality of switches alternately connects each of the plurality of resistor nodes to one of a plurality of low impedance nodes and a low impedance input node associated with the amplifier. Switch control circuitry selectively controls the plurality of switches to transmit the audio signal to the low impedance input node.

REFERENCES:
patent: 5285169 (1994-02-01), Theus
patent: 5408199 (1995-04-01), Nagano et al.

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