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

[Jean-Marc Valin]

jm          03/10/01 18:17:25

  Modified:    libspeex lpc.c
  Log:
  improved LPC analysis (mostly for very tonal signals)

Revision  Changes    Path
1.10      +1 -1      speex/libspeex/lpc.c

Index: lpc.c
===================================================================
RCS file: /usr/local/cvsroot/speex/libspeex/lpc.c,v
retrieving revision 1.9
retrieving revision 1.10
diff -u -r1.9 -r1.10
--- lpc.c	17 May 2003 05:46:29 -0000	1.9
+++ lpc.c	1 Oct 2003 22:17:25 -0000	1.10
@@ -85,7 +85,7 @@
       r = -ac[i + 1];
       for (j = 0; j < i; j++) 
          r -= lpc[j] * ac[i - j];
-      r /= error;
+      r /= error+.004*ac[0];
 
       /*  Update LPC coefficients and total error */
       lpc[i] = r;

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