Sound reproduction

Details Sound reproduction Sound reproduction

1991-01-09

1992-08-04

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Quadrasonic

381 1, 381 24, H04S 300

Patent

active

051366509

ABSTRACT:
A sound reproduction system for converting encoded stereo signals on input channels A and B into signals on left, supplemental left, right, and supplemental right output channels, respectively, that includes a left output channel for producing output signals intended to come from the left direction; a supplemental left output channel for producing output signals similar in level (intensity) to output signals of the left output channel and with reduced steered signal level for left direction signals; a right output channel for producing output signals intended to come from the right direction; and a supplemental right output channel for producing output signals similar in level (intensity) to output signals on the right output channel and with reduced steered signal level for right direction signals.

REFERENCES:
patent: 3772479 (1973-11-01), Hilbert
patent: 3786193 (1974-01-01), Tsurushima
patent: 3798373 (1974-03-01), Bauer
patent: 3812295 (1974-05-01), Bauer
patent: 3825684 (1974-07-01), Ite
patent: 3829615 (1974-08-01), Hiramatsu
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patent: 4074083 (1978-02-01), Berkovitz
patent: 4236039 (1980-11-01), Cooper
patent: 4704728 (1987-11-01), Scheiber
patent: 4862502 (1989-08-01), Griesinger
patent: 4891839 (1990-01-01), Scheiber
Julstrom, "A High Performance Surround Sound Process for Home Video", J. Audio Eng. Soc., vol. 35, No. 7/8, 1987, pp. 536-549.

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