[Speex-dev] Speech Detection

Zhao, Dun (NSN - CN/Shanghai)
Wed, 06 Jan 2010 00:10:19 -0000

Hi Debasish,

I think it is a better way to refer speech recognition materials.
The preprocess part of them will always introduce the words detection.

One way I used is to compute the zero-crossing rate.

Here is the wiki page you may find useful:
http://en.wikipedia.org/wiki/Zero-crossing_rate


Good luck!


Martin

________________________________

From: speex-dev-bounces at xiph.org [mailto:speex-dev-bounces at xiph.org] On
Behalf Of ext Debasish Chandra
Sent: Wednesday, January 06, 2010 12:23 AM
To: speex-dev at xiph.org
Subject: [Speex-dev] Speech Detection



Hi,



I want to detect speech locations from raw WAV file. For example a 10
sec WAV file contains silence/noise for 1st sec, speech for next 4
seconds, then silence/noise for next 2 seconds and speech for next 3
seconds.

I want to generate an information that this WAV file has speech from 1-5
seconds and from 8-10 seconds.

How I can do that by using preprocessor utility of libspeexdsp?



With Best Regards,

Debasish



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