Audio noise reduction

Details Audio noise reduction Audio noise reduction

2011-08-23

2011-08-23

Mei, Xu (Department: 2614)

Electrical audio signal processing systems and devices

Noise or distortion suppression

Spectral adjustment

C700S094000

Reexamination Certificate

active

08005239

ABSTRACT:
A method for reducing audio noise in an audio signal acquisition is described herein. The method includes: receiving an input audio signal; separating the input audio signal into a high-frequency portion and a low-frequency portion based on a threshold frequency; synthesizing the low-frequency portion to at least reduce any audio noise therein to generate a new low-frequency portion; combining the high-frequency portion and the new low-frequency portion to form a new audio signal representing the input audio signal; and outputting the new audio signal for the audio signal acquisition.

REFERENCES:
patent: 6185298 (2001-02-01), Hashimoto
patent: 2005/0111683 (2005-05-01), Chabries et al.
patent: 2006/0098827 (2006-05-01), Paddock et al.

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