US PATENT SUBCLASS 381 / 108
.~.~ Including feedback

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

104  DF  INCLUDING AMPLITUDE OR VOLUME CONTROL {4}
107  DF  .~ Automatic {1}
108.~.~ Including feedback

DEFINITION

Classification: 381/108

Including feedback:

(under subclass 107) Subject matter further having provision for returning a fraction of an output signal back to an input.

SEE OR SEARCH THIS CLASS, SUBCLASS:

83, for feedback suppression in a public address system.

93, for feedback suppression in a audio systems in general.

95, for microphone circuits with feedback.

96, for loudspeaker circuits with feedback.