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Change sign in ff_celp_lp_synthesis_filterf(). This makes this function

useful for AMR and RA144.

Patch by Kenan Gillet

Originally committed as revision 17546 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Kenan Gillet 2009-02-23 22:19:16 +00:00 committed by Vitor Sessak
parent 40284e9c8b
commit cacb82134e
2 changed files with 2 additions and 2 deletions

View File

@ -102,6 +102,6 @@ void ff_celp_lp_synthesis_filterf(
{
out[n] = in[n];
for(i=1; i<filter_length; i++)
out[n] += filter_coeffs[i] * out[n-i];
out[n] -= filter_coeffs[i] * out[n-i];
}
}

View File

@ -81,7 +81,7 @@ void ff_qcelp_lspf2lpc(const float *lspf, float *lpc)
{
double pa[6], qa[6];
int i;
double bandwith_expansion_coeff = -QCELP_BANDWITH_EXPANSION_COEFF * 0.5;
double bandwith_expansion_coeff = QCELP_BANDWITH_EXPANSION_COEFF * 0.5;
lsp2polyf(lspf, pa, 5);
lsp2polyf(lspf + 1, qa, 5);