Noise-resistant utterance detector

Details Noise-resistant utterance detector Noise-resistant utterance detector

2003-08-27

2008-11-11

Chawan, Vijay B (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

Recognition

C704S226000, C704S219000, C704S210000, C704S249000

Reexamination Certificate

active

07451082

ABSTRACT:
A method and detector for providing a noise resistant utterance detector is provided by extracting a noise estimate (15) to augment the signal-to-noise ratio of the speech signal, inverse filtering (17) of the speech signal to focus on the periodic excitation part of the signal and spectral reshaping (19) to accentuate separation between formants.

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patent: 6980950 (2005-12-01), Gong et al.
patent: 2001/0001853 (2001-05-01), Mauro et al.
J. Markel, “Digital Inverse Filtering-A New Tool for Formant Trajectory Estimation,” IEEE Transactions on Audio and Electroacoustics, vol. 20, Issue 2, pp. 129-137, Jun. 1972.

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