Matrix four-channel decoding system

Details Matrix four-channel decoding system Matrix four-channel decoding system

1974-03-04

1976-04-20

Olms, Douglas W.

1791004ST, H04R 500

Patent

active

039521575

ABSTRACT:
A matrix four-channel decoding system wherein the mixing coefficients or mixing ratios of left and right composite signals of medium frequency range are continuously changed in accordance with the level conditions of directional audio input signals contained in the composite signals and the mixing coefficients or mixing ratios of the left and right composite signals of low and high frequency ranges are substantially fixed, thereby attaining the more natural four-channel reproduction.

REFERENCES:
patent: 3708631 (1973-01-01), Bauer et al.
patent: 3786193 (1974-01-01), Tsurushima
patent: 3825684 (1974-07-01), Ito et al.
patent: 3829615 (1974-08-01), Hiramatsu
patent: 3836715 (1974-09-01), Ito et al.

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