Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement
Reexamination Certificate
2006-04-28
2009-10-20
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Stereo speaker arrangement
C381S306000, C381S307000
Reexamination Certificate
active
07606380
ABSTRACT:
A method and system for sound beam-forming using internal device speakers in conjunction with external speakers provides a low cost alternative to present external surround array systems. A processing circuit within an audio device or audio/visual (AV) device such as a digital television (DTV) generates signals for internal and external speakers that phase-align the internal speakers with the external speakers for beam-forming. The beam may be a surround beam directed away from a listening position so that surround channel information is only heard as reflections. Alternatively, the beam may be a “night mode” beam that concentrates sound at a particular location or multiple beams may be formed for picture-in-picture or other applications where it is desirable to provide multiple isolated listening locations.
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Chin Vivian
Cirrus Logic Inc.
Harris Andrew M.
Mitch Harris Atty at Law, LLC
Suthers Douglas J
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