This changes the output by (stddev: 0.21 PSNR:109.51, file:ddinterview28.ra),
the changes are due to float rounding inaccuracies and do not happen if doubles
are used.
Originally committed as revision 15394 to svn://svn.ffmpeg.org/ffmpeg/trunk
gain_block[9] = 10 * log10(sum) - 32;
for (i=0; i < 5; i++) {
- block[i] = 0;
+ block[i] = buffer[i];
for (j=0; j < 36; j++)
block[i] -= block[i-1-j]*ractx->sp_lpc[j];
- for (j=0; j < i; j++)
- buffer[i] -= buffer[i-1-j]*ractx->sp_lpc[j];
}
/* output */
for (i=0; i < 5; i++)
- block[i] = av_clipf(block[i] + buffer[i], -4095, 4095);
+ block[i] = av_clipf(block[i], -4095, 4095);
}
static void convolve(float *tgt, const float *src, int len, int n)