Apparatus and method for adjusting levels between channels of a

Details Apparatus and method for adjusting levels between channels of a Apparatus and method for adjusting levels between channels of a

1994-04-29

1996-06-25

Kuntz, Curtis

Electrical audio signal processing systems and devices

Binaural and stereophonic

Center channel

H04R 500

Patent

active

055307604

ABSTRACT:
Surround sound systems commonly produce, in addition to a surround channel, left, right and center channels. An apparatus is provided for connection between the left, right and center channels to enable the balance between the center channel and the left and right channels to be adjusted. It enables the level of the center channel to be reduced and the center channel to be correspondingly redistributed to the left and right channels to create a phantom center channel from those left and right channels. The degree to which the center channel is reduced in level, and extent to which the center channel is redistributed to the left and right channels are both variable.

REFERENCES:
patent: 2019615 (1935-11-01), Maxfield
patent: 3952157 (1976-04-01), Takahashi et al.
patent: 4932059 (1990-06-01), Fosgate
patent: 4980915 (1990-12-01), Ishikawa
patent: 5043970 (1991-08-01), Holman
patent: 5172415 (1992-12-01), Fosgate
patent: 5189703 (1993-02-01), Holman
patent: 5199075 (1993-03-01), Fosgate
patent: 5222059 (1993-07-01), Holman
patent: 5263087 (1993-11-01), Fosgate
Ishikawa et al., IEEE Transactions on consumer Electronics, "1988 International Conference on Consumer Electronics, Part 1," vol. 34, No. 3, Aug. 1988, New York, pp. 612-618.
Extract from Dolby Surround Manual (Section IV).

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