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

Kenan Gillet committed 17 years ago

Commit cacb8211 parent 40284e92 files · +2 −2Browse files

Unified · Split

2 files

@@ -102,6 +102,6 @@ void ff_celp_lp_synthesis_filterf( · 101 unmodified lines
102	102	{
103	103	out[n] = in[n];
104	104	for(i=1; i<filter_length; i++)
105		− out[n] += filter_coeffs[i] * out[n-i];
	105	+ out[n] -= filter_coeffs[i] * out[n-i];
106	106	}
107	107	}

@@ -81,7 +81,7 @@ void ff_qcelp_lspf2lpc(const float lspf, float lpc) · 80 unmodified lines
81	81	{
82	82	double pa[6], qa[6];
83	83	int i;
84		− double bandwith_expansion_coeff = -QCELP_BANDWITH_EXPANSION_COEFF * 0.5;
	84	+ double bandwith_expansion_coeff = QCELP_BANDWITH_EXPANSION_COEFF * 0.5;
85	85
86	86	lsp2polyf(lspf, pa, 5);
87	87	lsp2polyf(lspf + 1, qa, 5);

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