Method and system for microphone array input type speech recogni

Details Method and system for microphone array input type speech recogni Method and system for microphone array input type speech recogni

1997-03-14

1999-12-28

Voeltz, Emanuel Todd

Data processing: speech signal processing, linguistics, language

Speech signal processing

Application

704233, 381 92, G10L 300

Patent

active

06009396&

ABSTRACT:
A microphone array input type speech recognition scheme capable of realizing a high precision sound source position or direction estimation by a small amount of calculations, and thereby realizing a high precision speech recognition. A band-pass waveform, which is a waveform for each frequency bandwidth, is obtained from input signals of the microphone array, and a band-pass power of the sound source is directly obtained from the band-pass waveform. Then, the obtained band-pass power is used as the speech parameter. It is also possible to realize the sound source estimation and the band-pass power estimation at high precision while further reducing an amount of calculations, by utilizing a sound source position search processing in which a low resolution position estimation and a high resolution position estimation are combined.

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