Multichannel spectral mapping audio apparatus and method...

Details Multichannel spectral mapping audio apparatus and method... Multichannel spectral mapping audio apparatus and method...

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.

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