VAD (Voice Activity Detection) algorithms? ("Richard H." )

Subject: VAD (Voice Activity Detection) algorithms?
From:    "Richard H."  <auditory(at)AUGMENTICS.COM>
Date:    Fri, 30 Apr 2004 16:45:55 +0100

Hi,

Does anyone have any idea where I can find some simple algorithms/code to allow the presence or absence of speech in a signal to be
detected?

Thanks,

Richard