DSP - Voice Activity Detection: what are my options?
I agree. I've previously researched this topic before and found that it is a very complex subject.  Here are some basic algorithms: http://en.wikipedia.org/wiki/Speech_recognition#Algorithms.. I highly suggest you do lots of research. Here's some links for you to enjoy :) http://www.dsprelated.com/showmessage/83934/1.php &amp; http://www.ee.columbia.edu/~dpwe/pubs/LeeE06-vad.pdf and many more on google.