US PATENT SUBCLASS 381 / 317
.~ Noise compensation circuit


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381 /   HD   ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES

312  DF  HEARING AIDS, ELECTRICAL {9}
317.~ Noise compensation circuit {1}
318  DF  .~.~> Feedback suppression


DEFINITION

Classification: 381/317

Noise compensation circuit:

(under subclass 312) Subject matter including circuitry to ameliorate effects of undesired signals.

SEE OR SEARCH THIS CLASS, SUBCLASS:

94, for a device of this class including means for noise suppression.

322+, for subject matter in which amelioration of noise is accomplished using purely mechanical or acoustic means.

SEE OR SEARCH CLASS

327, Miscellaneous Active Electrical Nonlinear Devices, Circuits and Systems,

551+, for unwanted signal suppression generally.