Surround sound field reproduction system and surround sound...

Electrical audio signal processing systems and devices – Binaural and stereophonic – Quadrasonic

Reexamination Certificate

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Reexamination Certificate

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06934395

ABSTRACT:
A surround sound field reproduction system and method is disclosed by which, in such a case that a listener changes its posture so that a portion of a video image to which attention should be paid may be observed in front of the listener, a sound image can be localized accordingly in a direction in which the video image is observed in front of the listener. Specifically, the surround sound field reproduction apparatus includes a plurality of horizontal panners for receiving a plurality of sound signals from microphones disposed horizontally and cooperating with each other to control the horizontal localization, and a vertical panner for receiving sound signals from microphones disposed vertically to control the vertical localization. The horizontal panners level-distribute the received sound signals to a plurality of output channels provided corresponding to surround reproduction output channels. The vertical panner changes the level distribution of the sound signals in the vertical direction to produce a sound signal and outputs the produced sound signal to an output channel for the front center.

REFERENCES:
patent: 5857026 (1999-01-01), Scheiber
patent: 6072878 (2000-06-01), Moorer
patent: 6507658 (2003-01-01), Abel et al.
patent: 6665407 (2003-12-01), Dicker et al.
patent: 6694027 (2004-02-01), Schneider

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