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 apparatus; la...

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; stereos; televisions; portable stereos; boomboxes; stereo processors for use in cinemas; video disc playback and/or recording apparatus; audio playback and/or recording apparatus; home audio-visual recording apparatus; laser ...