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...(non-real-time, half-duplex), the latency has no effect at all. Do you know of anyone else who has implemented some post-processing software to provide more "exotic" speech detection, even at the expense of increased latency? Cheers, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B

...many times in analog circuitry, and is described in this (and other) papers? http://people.csail.mit.edu/jrg/2005/IS05_schutte.pdf - Over what time period is VAD done? Is it done on a frame by frame basis or over some longer period? Thank you, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B

...ection was done with something more sophisticated than frame energy. As you said above, I'll have to look at the sources. For many systems, sonorant energy rate detection is used to detect voice, even under very poor SNR conditions. Cheers, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B

...look at their web pages, and the Sphinx software looks interesting, but I was unable to determine if there is a "hook" in their system to allow simple speech _detection_ rather than recognition, which is what I am looking for. Cheers, -- Larry Gadallah, VE6VQ/W7 lgadallah AT gmail DOT com PGP Sig: 616D 4E52 CF1F 3FEC FFFB F11B 7DB9 C79A EA7E B25B