US PATENT SUBCLASS 381 / 94.1
NOISE OR DISTORTION SUPPRESSION

Current as of: June, 1999
Click HD for Main Headings
Click for All Classes

Internet Version by PATENTEC © 1999      Terms of Use


381 /   HD   ELECTRICAL AUDIO SIGNAL PROCESSING SYSTEMS AND DEVICES

94.1NOISE OR DISTORTION SUPPRESSION {7}
94.2  DF  .~> Spectral adjustment {1}
94.4  DF  .~> Interpolation
94.5  DF  .~> Soft switching, muting, or noise gating
94.6  DF  .~> Hum or ground loop
94.7  DF  .~> Using signal channel and noise channel
94.8  DF  .~> Peak limiting or pulsive noise compensation
94.9  DF  .~> Feedforward circuitry for transducer compensation

DEFINITION

Classification: 381/94.1

NOISE OR DISTORTION SUPPRESSION:

(under the class definition) Subject matter with provisions for reducing the effects of an unwanted signal on a desired signal.

SEE OR SEARCH THIS CLASS, SUBCLASS:

13, for antinoise means in broadcast or multiplex stereo systems.

71.1+, for acoustical noise or sound cancellation.

73.1, for audio masking.

SEE OR SEARCH CLASS

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

551+, for unwanted signal suppression. 708, Electrical Computers: Arithmetic Processing and Calculating,

300+, for digital selection or rejection of signal components and subclass 819 for filtering electrical signals by analog

computation.