Low complexity noise reduction method

Details Low complexity noise reduction method Low complexity noise reduction method

2011-03-15

2011-03-15

Chin, Vivian (Department: 2614)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C381S094300, C381S094100, C704S225000, C704S227000, C704S228000, C704S233000

Reexamination Certificate

active

07908138

ABSTRACT:
To reduce noise in an input signal that may contain speech, first an estimate of the noise level in the signal is obtained. The level of the input signal is then compared with the noise level estimate signal to determine whether speech is dominant. Less aggressive noise reduction is applied to the input signal when speech is dominant than when only noise is present.

REFERENCES:
patent: 6604071 (2003-08-01), Cox et al.
patent: 2002/0002455 (2002-01-01), Accardi et al.
patent: 97/10586 (1997-03-01), None
patent: WO 9710586 (1997-03-01), None
patent: 2005/114656 (2005-12-01), None

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