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| author | Reynaldo H. Verdejo Pinochet <reynaldo@opendot.cl> | 2009-03-04 01:33:56 +0000 |
|---|---|---|
| committer | Reynaldo H. Verdejo Pinochet <reynaldo@opendot.cl> | 2009-03-04 01:33:56 +0000 |
| commit | 87574416f7fa256080321bfc0806dab4f0e05345 (patch) | |
| tree | 5f04a7abf99ec7483f32f0f47c884edfc1886245 /libavcodec/qcelpdata.h | |
| parent | 77bd18e117176213bdb4e7cbcf7b17662ab99300 (diff) | |
| download | ffmpeg-87574416f7fa256080321bfc0806dab4f0e05345.tar.gz | |
Part 2 of 2 of Kenan Gillet's 'make ff_qcelp_lspf2lpc
more general' changeset. This one relocates the QCELP
especific code to the qcelpdec.* files.
Originally committed as revision 17800 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec/qcelpdata.h')
| -rw-r--r-- | libavcodec/qcelpdata.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/libavcodec/qcelpdata.h b/libavcodec/qcelpdata.h index 0ab0be1c9f..1c9fad002d 100644 --- a/libavcodec/qcelpdata.h +++ b/libavcodec/qcelpdata.h @@ -550,4 +550,13 @@ static const double qcelp_rnd_fir_coefs[11] = { */ #define QCELP_LSP_OCTAVE_PREDICTOR 29.0/32 +/** + * initial coefficient to perform bandwidth expansion on LPC + * + * @note: 0.9883 looks like an approximation of 253/256. + * + * TIA/EIA/IS-733 2.4.3.3.6 6 + */ +#define QCELP_BANDWITH_EXPANSION_COEFF 0.9883 + #endif /* AVCODEC_QCELPDATA_H */ |