Method and apparatus for speech detection using...

Details Method and apparatus for speech detection using... Method and apparatus for speech detection using...

2007-11-20

2007-11-20

Abebe, Daniel (Department: 2626)

Data processing: speech signal processing, linguistics, language

Speech signal processing

For storage or transmission

C704S233000

Reexamination Certificate

active

10060511

ABSTRACT:
Speech presence is detected by first bandpass filtering (141, 143, 145) the speech to split it into banks of sub-bands. A matrix of shift registers (150) store each sub-band of speech. A power determining circuit (259) then determines individual power measurements of the speech stored in each shift register element. A variance combining circuit (160) combines the individual power measurements to provide a variance for the individual shift registers. A comparator circuit (170) finally compares the variance with at least one threshold to indicate whether speech is detected.

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