Method for realizing virtual multi-channel output by...

Details Method for realizing virtual multi-channel output by... Method for realizing virtual multi-channel output by...

2007-07-10

2007-07-10

McFadden, Susan (Department: 2626)

Data processing: speech signal processing, linguistics, language

Audio signal bandwidth compression or expansion

C381S010000

Reexamination Certificate

active

10639434

ABSTRACT:
A method for realizing virtual multi-channel by spectrum analysis is disclosed. The low-frequency-effect sound data is obtained by averaging sound data of left and right channels in the two-channel sound source and filtering the average by a first low pass filter. The central channel sound data is obtained by averaging sound data of the left and the right channels in the two-channel sound source and filtering the average by a second low pass filter. The surround right and left sound data is obtained by copying sound data of the left and the right channels in the two-channel sound source, respectively.

REFERENCES:
patent: 5970152 (1999-10-01), Klayman
patent: 6449371 (2002-09-01), Tan et al.

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