Method for recognizing speech with noise-dependent variance...

Details Method for recognizing speech with noise-dependent variance... Method for recognizing speech with noise-dependent variance...

2007-11-06

2007-11-06

Armstrong, Angela A. (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

Reexamination Certificate

active

10066993

ABSTRACT:
As the application of a variance normalization (VN) to a speech signal (S) may be advantageous as well as disadvantageous with respect to the recognition rate in a speech recognizing process in dependence of the degree of the signal disturbance it is suggested to calculate a degree (ND) of variance normalization strength in dependence of the noise level of the signal, thereby skipping the step of variance normalization in the case of an undisturbed or clean signal.

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