Electrical audio signal processing systems and devices – Including phase control
Reexamination Certificate
2006-05-31
2009-10-20
Chin, Vivian (Department: 2614)
Electrical audio signal processing systems and devices
Including phase control
C381S099000, C381S300000
Reexamination Certificate
active
07606377
ABSTRACT:
A method and system for surround sound beam-forming using vertically displaced drivers provides a low cost alternative to present external surround array systems. A pair of vertically displaced speaker drivers is supplied with surround and main channel information in a controlled phase relationship with respect to each driver such that the surround channel information is propagated in a directivity pattern substantially differing from that of the main channel information. The main channel information is generally directed at a listening area, while the surround channel information is directed away from the listening area and is substantially attenuated in the direction of the listening area, so that the surround channel information is heard as a diffuse reflected field. An electronic network provides for control of the surround channel phase relationship and combining of main and surround signals for providing inputs to individual power amplifiers for each driver.
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Chin Vivian
Cirrus Logic Inc.
Harris Andrew M.
Mitch Harris Atty at Law, LLC
Paul Disler
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