Computer programs for controlling and improving sound quality; computer programs for creating and virtualizing surround sound; computer programs for controlling directivity on sound recording apparatus and instruments; digital audio players; digital audio players for automobiles; CD players; audio cassette players; DVD players; DVD recorders; video disc players; video disc recorders; sound recording apparatus and instruments, namely, tape recorders, digital voice recorders, digital audio reco...

Consumer electronics sound system, composed primarily of digital sound processors and once programmable and/or re-programmable logic firmware within stereo amplifiers; integrated stereo amplifiers; digital sound processors; and amplified audio speaker systems, composed primarily of audio speakers, once programmable logic firmware and digital sound processors