Sterophonic sound field expansion device

Details Sterophonic sound field expansion device Sterophonic sound field expansion device

1996-04-26

1998-04-14

Kuntz, Curtis

Electrical audio signal processing systems and devices

Binaural and stereophonic

381 63, H04R 500

Patent

active

057402531

ABSTRACT:
A stereophonic sound field generation device includes a left side localized reflected sound generation circuit which generates a left channel reflected sound signal and a left channel cancel signal for realizing an outside-of-speaker localization of the left channel reflected sound signal. The left side localized reflected sound generation circuit includes a delay circuit and a coefficient generator. By variously setting delay time of the delay circuit 140 and multiplication coefficient of the coefficient generator with respect to each reflected sound, at least one reflected sound in a broad listenable range can be localized in a space outside of a left channel speaker even when a listener moves his listening position. The stereophonic sound field expansion device includes also a right side localized reflected sound generation circuit which is of the same construction as the left side localized reflected sound generation circuit and at least one reflected sound can be localized in a space outside of a right channel speaker.

REFERENCES:
patent: 4980914 (1990-12-01), Kunugi et al.

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