US PATENT SUBCLASS 381 / 102
.~.~ With amplitude control

Current as of: June, 1999
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381 /   HD   ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES

98  DF  INCLUDING FREQUENCY CONTROL {3}
101  DF  .~ Automatic tone control {1}
102.~.~ With amplitude control

DEFINITION

Classification: 381/102

With amplitude control:

(under subclass 101) Subject matter including automatic tone control combined with means for adjusting or setting the signal level or for obtaining a substantially constant amplitude output signal for a range of variations of the amplitude of an input signal.

SEE OR SEARCH CLASS

455, Telecommunications,

233.1, for combined volume and tone control in a radio receiver.