Electrical audio signal processing systems and devices – Binaural and stereophonic – Quadrasonic
Reexamination Certificate
2007-01-16
2007-01-16
Pendleton, Brian T. (Department: 2615)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Quadrasonic
C381S019000
Reexamination Certificate
active
09891941
ABSTRACT:
A method and circuit for deriving a set of multichannel audio signals from a conventional monaural or stereo audio signal uses an auxiliary multichannel spectral mapping data stream. Audio can be played back in stereo and multichannel formats from a conventional stereo signal on compact discs, FM radio, or other stereo or monaural delivery systems. The invention reduces the data rate needed for the transmission of multichannel digital audio.
REFERENCES:
patent: 3746792 (1973-07-01), Scheiber
patent: 3959590 (1976-05-01), Scheiber
patent: 5136650 (1992-08-01), Griesinger
patent: 5319713 (1994-06-01), Waller, Jr.
patent: 5333201 (1994-07-01), Waller, Jr.
patent: 5459790 (1995-10-01), Scofield et al.
patent: 5471411 (1995-11-01), Adams et al.
patent: 5579124 (1996-11-01), Aijala et al.
patent: 6252965 (2001-06-01), Beard
patent: 42 09 544 (1993-09-01), None
patent: 05 40329 (1993-05-01), None
patent: 07 30365 (1996-09-01), None
patent: 04079599 (1992-03-01), None
patent: 04225700 (1992-08-01), None
Dressler, “Dolby Pro Logic Surround Decoder Principles of Operation”, http://www.dolby.com/htds&pl/whtppr.html, pp. 1-13.
Waller, Jr., “The Circle of Surround® Audio Surround System”, Rocktron Corporation White Paper, pp. 1-7.
O'Shaughnessy, “Speech Communication—Human and Machine”, Addison-Wesley Publishing Company, 1987, pp. 148-153.
Beard Trust Terry D.
Koppel Patrick & Heybl
Pendleton Brian T.
LandOfFree
Multichannel spectral mapping audio apparatus and method... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Multichannel spectral mapping audio apparatus and method..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multichannel spectral mapping audio apparatus and method... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3813598