Speech processing apparatus and method measuring signal to...

Details Speech processing apparatus and method measuring signal to... Speech processing apparatus and method measuring signal to...

2005-11-15

2005-11-15

Dorvil, Richemond (Department: 2654)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C381S094300

Reexamination Certificate

active

06965860

ABSTRACT:
A speech processing apparatus and method are provided for processing an input speech signal to compensate for the effects of noise in the input speech signal. The method and apparatus divide the input speech signal into a plurality of sequential time frames and a set of spectral parameters are extracted for each time frame, which parameters are representative of the input signal during the time frame. The system then processes the input speech by scaling the parameters for each frame in dependence upon a measure of the signal to noise ratio for the input frame. In this way, the effects of additive noise on the input signal can be reduced.

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Tetsuo Kosaka et al., “Instantaneous Environment Adaptation Techniques Based on Fast PMC and Map-CMS Methods,” IEEE (1998), pp. 789-792.

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