Sound system and method of sound reproduction

Details Sound system and method of sound reproduction Sound system and method of sound reproduction

2011-07-05

2011-07-05

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo speaker arrangement

C381S019000

Reexamination Certificate

active

07974425

ABSTRACT:
A sound reproduction system comprises a left and right speakers located in close proximity, and a sound processor which provides audio signals to the pair of speakers. The sound processor preferably derives a cancellation signal from the difference between the left and right channels. The resulting difference signal is scaled, delayed (if necessary), and spectrally modified before being added to the left channel and, in opposite polarity, to the right channel. The spectral modification to the difference channel preferably takes the form of a low-frequency boost over a specified frequency range, in order to restore the correct timbral balance after the differencing process. Additional phase-compensating all-pass networks may be inserted in the difference channel to correct for any extra phase shift contributed by the spectral modifying circuit. The technique may be used in a surround sound system.

REFERENCES:
patent: 5809150 (1998-09-01), Eberbach
patent: 5844993 (1998-12-01), Ilda et al.
patent: 6243476 (2001-06-01), Gardner
patent: 6292570 (2001-09-01), Aarts
patent: 6721425 (2004-04-01), Aylward
patent: 6804358 (2004-10-01), Kawano
patent: 7013013 (2006-03-01), Takei
patent: 7177431 (2007-02-01), Davis et al.
patent: 7254239 (2007-08-01), Fincham
patent: 7593533 (2009-09-01), Fincham
patent: 2005/0281409 (2005-12-01), Sakane et al.
patent: 2006/0210087 (2006-09-01), Davis et al.

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