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Voice activity detection using zero crossing rate

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alirazaghumman

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i m doing VAD based on zero crossing rate.i have studied papers and come to know that zero crossing rate threshold is


ZCRT=mean(noise)+5*standard deviation(noise)


how can i set value of detection?how can i implement ZCR in SIMULINK?
is there any other method?
 

Hi,

I'm developing VAD too and I'm using a sample program called Ozeki VoIP SIP SDK. It is compatible with other systems and you can easily configure it to your needs. For me it was quite useful that they provide lots of documentations.
If you would like to try this program, here is the link for you http://www.voip-sip-sdk.com/p_238-voice-activation-detection-voip.html.
I hope I could help! :)
Cheers!
 

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