Electrical audio signal processing systems and devices – Binaural and stereophonic – Stereo speaker arrangement
Reexamination Certificate
2007-01-09
2007-01-09
Chin, Vivian (Department: 2615)
Electrical audio signal processing systems and devices
Binaural and stereophonic
Stereo speaker arrangement
C381S310000, C381S074000
Reexamination Certificate
active
11343553
ABSTRACT:
In an audio reproducing apparatus, first and second filters convolute impulse responses corresponding to transfer functions from a position where a right-hand sound source is located to the right and left ears of the listener into an audio signal, respectively, and third and fourth filters convolute impulse responses corresponding to transfer functions from a position where a left-hand sound source is located to the right and left ears of the listener into another audio signal, respectively. Fifth and sixth filters extract low-frequency components of the audio signal, and seventh and eighth filters extract low-frequency components of the another audio signal. The output signals of the first, third, fifth, and seventh filters are added, and the output signals of the second, fourth, the sixth, and eighth filters are added.
REFERENCES:
patent: 5757931 (1998-05-01), Yamada et al.
patent: 6026169 (2000-02-01), Fujimori
patent: 6385320 (2002-05-01), Lee
patent: 6590983 (2003-07-01), Kramer
patent: 2002/0048378 (2002-04-01), Oki
Prior Art, Figures 24 and 25, p. 5, line 20 and p. 7, line 3.
Okimoto Koyuru
Yamada Yuji
Chin Vivian
Faulk Devona E.
Sony Corporation
Wolf Greenfield & Sacks P.C.
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