US PATENT SUBCLASS 381 / 19
.~ Quadrasonic

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

1  DF  BINAURAL AND STEREOPHONIC {8}
19.~ Quadrasonic {1}
20  DF  .~.~> Matrix {1}

DEFINITION

Classification: 381/19

Quadrasonic:

(under subclass 1) Subject matter in which four independent sound signals are to be reproduced.