Videodiscs, high-fidelity videocassettes, and stereo television bring to the consumer a substantial library of video entertainment with high quality stereo soundtracks. A growing portion of these are encoded with surround sound using a 4-2-4 matrix-based method particularly suited to front-stage oriented film/video presentation. Home reproduction is accomplished with a processor incorporating dynamic matrix modification to stabilize and enhance directional effects and a delayed surround channel to aid forward localization of front sound.
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