Audio reproducing apparatus

Details Audio reproducing apparatus Audio reproducing apparatus

2006-05-09

2006-05-09

Chin, Vivian (Department: 2644)

Electrical audio signal processing systems and devices

Binaural and stereophonic

Stereo speaker arrangement

C381S310000, C381S074000

Reexamination Certificate

active

07043036

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), Kraemer
patent: 2002/0048378 (2002-04-01), Oki
Applicant's admitted prior art (Figure 25, p. 6, line 20-p. 8, line 3).
Applicant's admitted prior art, Figures 24 and 25, p. 5, line 20-p. 7, line 3.

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