search for: is_speech

speex_preprocess() isn't covered in the manual, is it? But, it's very easy to use. If it returns non-zero, voice was detected. Tom "Meir Yeshurun" <mt_yeshurun@hotmail.com> wrote: > > I would like to use speex_preprocess() for voice activity detection. I read > the comments in speex_preprocess.h and the relevant paragraphs in the Speex > manual. Is there

...process() is not called unless AGC or denoise is > enabled. > If only VAD is enabled, it does not get called. > > speex_preprocess() has vad_enabled specific code to detect voice activity. > speex_preprocess() > { > ... > ... > if (st->vad_enabled) > is_speech = speex_compute_vad(st, ps, mean_prior, mean_post); > > ... > ... > return is_speech; > } > > Some questions for the knowledgable: > Is speex_preprocess() needed to use vad? > > Can speex_preprocess() be used to detect silent frames if vad is enabled, &g...

...address when posting to membership-restricted mailing addresses. Was wondering why this hadn't arrived. Reposted message as follows: Hi, Would a patch to change the constants on line 454 - 462 in the preprocessor into variables be of general interest? At the moment, whether or not "is_speech" is 1 is hardcoded to be (speec_prob > .35 or >.1 within last 20 frames or it's been less than 20 frames without).. I'd like to turn those 4 constants into speex_preprocess_ctl tunable variables, most likely through SPEEX_PREPROCESS_GET_VAD_PARAMETERS / SET_VAD_PARAMETERS with...

On Mar 28, 2004, at 8:23 PM, Jean-Marc Valin wrote: >> The st->zeta pointer isn't freed in the >> speex_preprocess_state_destroy() >> function of the preprocess.c file (alloced in line 167). It's in >> Speex 1.1.4 >> by the way. > > Oops... Thanks for letting me know. I'll change that for the next > release (in the mean time, the fix is

...;.1)) */ - if (st->speech_prob> .20 || (st->last_speech < 20 && st->speech_prob>.05)) + if ( + st->speech_prob > st->speech_prob_start + || ( st->last_speech < 20 && st->speech_prob > st->speech_prob_continue ) + ) { is_speech = 1; st->last_speech = 0; - } else { + } + else + { st->last_speech++; if (st->last_speech<20) is_speech = 1; @@ -985,6 +995,30 @@ case SPEEX_PREPROCESS_GET_VAD: (*(int*)ptr) = st->vad_enabled; break; + + case S...