[xiph-cvs] cvs commit: speex/libspeex denoise.c

[Jean-Marc Valin]

jm          03/05/25 00:13:09

  Modified:    libspeex denoise.c
  Log:
  made the VAD a bit more sensitive

Revision  Changes    Path
1.17      +7 -5      speex/libspeex/denoise.c

Index: denoise.c
===================================================================
RCS file: /usr/local/cvsroot/speex/libspeex/denoise.c,v
retrieving revision 1.16
retrieving revision 1.17
diff -u -r1.16 -r1.17
--- denoise.c	25 May 2003 03:01:47 -0000	1.16
+++ denoise.c	25 May 2003 04:13:09 -0000	1.17
@@ -506,14 +506,16 @@
          p1 *= (1-pr);
       }
 
-      p0 = pow(p0,.3);
-      p1 = pow(p1,.3);      
+      p0 = pow(p0,.2);
+      p1 = pow(p1,.2);      
       
 #if 1
+      p0 *= 2;
       p0=p0/(p1+p0);
+      if (st->last_speech>20) 
       {
          float tmp = sqrt(tot_loudness)/st->loudness2;
-         tmp = 1-exp(-8*tmp);
+         tmp = 1-exp(-10*tmp);
          if (p0>tmp)
             p0=tmp;
       }
@@ -536,13 +538,13 @@
       st->speech_prob = p0/(1e-25+p1+p0);
       /*fprintf (stderr, "%f %f %f ", tot_loudness, st->loudness2, st->speech_prob);*/
 
-      if (st->speech_prob>.5 || (st->last_speech < 15 && st->speech_prob>.25))
+      if (st->speech_prob>.35 || (st->last_speech < 20 && st->speech_prob>.1))
       {
          is_speech = 1;
          st->last_speech = 0;
       } else {
          st->last_speech++;
-         if (st->last_speech<15)
+         if (st->last_speech<20)
            is_speech = 1;
       }
 

<p><p>--- >8 ----
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