Stationary spectral power dependent audio enhancement system

Details Stationary spectral power dependent audio enhancement system Stationary spectral power dependent audio enhancement system

2003-06-19

2009-10-13

Chin, Vivian (Department: 2614)

Electrical audio signal processing systems and devices

Noise or distortion suppression

Spectral adjustment

C381S094100, C704S226000

Reexamination Certificate

active

07602926

ABSTRACT:
An audio enhancement system (1) for speech recognition or voice control is described, comprising a signal input for carrying a distorted desired signal (z), a reference signal input, and a spectral processor (SP) coupled to both signal inputs for processing the distorted desired signal (z) by means of a reference signal (x) acting as an estimate for the distortion of the desired signal. The spectral processor (SP) is equipped for said processing such that a factor C′ is determined, whereby said estimate is a function of the factor C′ times the spectral power of the reference signal (x), and the factor C is determined as the spectral ratio between those components of the signals z and x, which are essentially stationary with time. Such a factor determined by stationary parts of those signals makes application of a critical speech detector in the audio enhancement system superfluous.

REFERENCES:
patent: 6108428 (2000-08-01), Suzuki et al.
patent: 6151397 (2000-11-01), Jackson et al.
patent: 6952482 (2005-10-01), Balan et al.
patent: 7158933 (2007-01-01), Balan et al.
patent: 7440891 (2008-10-01), Shozakai et al.
patent: WO9745995 (1997-12-01), None

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