US PATENT SUBCLASS 381 / 316
.~ Frequency transposition


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

312  DF  HEARING AIDS, ELECTRICAL {9}
316.~ Frequency transposition


DEFINITION

Classification: 381/316

Frequency transposition:

(under subclass 312) Subject matter in which some portion of a received audio signal is shifted in frequency prior to being delivered to the hearing aid's loudspeaker in order to enhance audibility.

SEE OR SEARCH THIS CLASS, SUBCLASS:

320, for spectral control in the hearing aid