System for deriving a center channel signal from an adapted weig

Details System for deriving a center channel signal from an adapted weig System for deriving a center channel signal from an adapted weig

1993-10-14

1995-06-20

Brinich, Stephen

Electrical audio signal processing systems and devices

Binaural and stereophonic

Center channel

381 22, H04R 500

Patent

active

054267021

ABSTRACT:
The system includes a direction detection circuit (32) for deriving a measure (Vwh) for a direction of a direction vector (Wh) which vector, in a state area in which combinations (R,L) of signal values of the left and right channel signals are shown at specific instants, is indicative of the direction of the most powerful sound source. A circuit (33) derives from this measure (Vwh) two weight factors (w1,w2). A center channel signal (C) is derived which is a weighted sum of the left (L) and right (R) channel signal determined by the weight factors (w1,w2). In this manner a center channel signal is obtained which has a less dull sound on reproduction.

REFERENCES:
patent: 4024344 (1977-05-01), Dolby et al.
patent: 4293821 (1981-10-01), Boudouris et al.
patent: 4532647 (1985-07-01), Willcocks
patent: 4696036 (1987-09-01), Julstrom
patent: 5297209 (1994-03-01), Kowaki

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