Six-axis surround sound processor with improved matrix and cance

Details Six-axis surround sound processor with improved matrix and cance Six-axis surround sound processor with improved matrix and cance

1996-04-02

1997-04-29

Oh, Minsun

Electrical audio signal processing systems and devices

Binaural and stereophonic

Pseudo stereophonic

381 22, H04R 500

Patent

active

056256965

ABSTRACT:
A surround sound processor for redistribution of stereophonic audio signals into multiple channels for presentation on a plurality of loudspeakers surrounding a listener has an improved direction detector filter circuit, a peak hold circuit in the direction detector for better dynamic separation, improved time constants in the servologic circuit, improved linearity correction in the control voltage generator to match the characteristics of the new voltage controlled amplifiers which are applied to the separation matrix, a separation matrix having cancellation of unwanted signals wihtout gain modification for desired signal components, and improved shelf filters in the rear channel outputs.

REFERENCES:
patent: 3982071 (1976-09-01), Weiss et al.
patent: 3989903 (1976-11-01), Cooper et al.
patent: 5216718 (1993-06-01), Fukuda
patent: 5504819 (1996-04-01), Fosgate

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