topic Re: API for Voice Detection in Intel® Integrated Performance Primitives

API for Voice Detection

shitesh — Sat, 12 Jun 2004 13:39:00 GMT

i'm looking for an API which can help me detect the voice presence in a conversation.

tks - hitesh

Re: API for Voice Detection

Vladimir_Dudnik — Tue, 15 Jun 2004 18:19:05 GMT

Voice detection (VAD) is generally done as a small codec or as a component of the codec.

It exists in the majority of speech codecs,see ippSR examples (VAD example in Audio processing and voiced/unvoiced frame detection in Pitch Detection Example). Generally VAD algorithms are integrated into codecs but could be extracted from them. Ipp contain some functions to support general calculations while voice detecting:

Zero crossing calculation, periodicity, energy calculation (dotprod) etc

Most efficient way of VAD brings the apiG729EncodeVAD() function (no actual encoding, just only VAD).

Regards,
Vladimir

Re: API for Voice Detection

mattroos — Tue, 12 Jul 2005 04:48:55 GMT

Where can I find these ippSR examples? Online? Within the IPP documentation? Can you be specific? I have IPP 4.1 but can't find the samples. where is the G729 function you mentioned? Thanks!

Matt

Re: API for Voice Detection

Ying_S_Intel — Wed, 13 Jul 2005 02:39:38 GMT

The IPP samples based on IPP version 4.1* including Speech Recognitions are downloadable via http://www.intel.com/cd/software/products/asmo-na/eng/perflib/ipp/219967.htm

As you may notice that we have more improved and expanded samples from latest 5.0 beta, you can try the latest samples offered in 5.0 beta. The IPP 5.0 based samples descriptions are located at here.

Hope it helps.
Thanks,
Ying S
Intel Corp.