Method and system for performing speech recognition

Details Method and system for performing speech recognition Method and system for performing speech recognition

G - Physics

10

L

G10L 15/08 (2006.01) G10L 21/02 (2006.01)

Patent

CA 2192397

Speech recognition processing is compensated for improving robustness of speech recognition in the presence of enhanced speech signals. The compensation overcomes the adverse effects that speech signal enhancement may have on speech recognition performance where speech signal enhancement causes acoustical mismatches between recognition models trained using unenhanced speech signals and feature data extracted from enhanced speech signals. Compensation is provided at the front end of an automatic speech recognition system by combining linear predictive coding and mel-based cepstral parameter analysis for computing cepstral features of transmitted speech signals used for speech recognition processing by selectively weighting mel- filter banks when processing frequency domain representations of the enhanced speech signals.

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