(under subclass 312) Subject matter having a circuit to regulate the amplitude of the entire frequency range of a received audio signal (i.e., broad band amplitude regulation).
(1) Note. The amount of amplification may be adjusted either manually or in response to a sound parameter, as in automatic gain or volume control (AGC, AVC).
SEE OR SEARCH THIS CLASS, SUBCLASS:
104+, for amplitude or volume control of an audio system.
