apparatus for use in processing audio electronic signals to create an expanded audio image from playback of the audio signals through speakers; multi-channel sound processors; integrated circuits; video monitors; video tuners; stereo receivers and amplifiers; [ tape decks; car stereos; televisions; portable stereos; boomboxes; stereo processors for use in cinemas; ] video disk playback and/or recording apparatus; audio playback and/or recording apparatus; [ home audio-visual recording apparat...

APPARATUS FOR USE IN PROCESSING AUDIO ELECTRONIC SIGNALS TO CREATE AN EXPANDED AUDIO IMAGE FROM PLAYBACK OF THE AUDIO SIGNALS THROUGH SPEAKERS; [MULTI-CHANNEL SOUND PROCESSORS;] [ INTEGRATED CIRCUITS; ] VIDEO MONITORS; VIDEO TUNERS; [STEREO RECEIVERS AND AMPLIFIERS;] [ AUDIO TAPE DECKS; VIDEO TAPE DECKS; ] [CAR STEREOS;] TELEVISIONS; [ PORTABLE STEREOS; BOOMBOXES; STEREO PROCESSORS FOR USE IN CINEMAS; VIDEO DISC PLAYBACK AND RECORDING APPARATUS; AUDIO PLAYBACK AND RECORDING APPARATUS; HOME AU...