eden-emu/opus
17
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Add coarse energy entropy model tuning.

Browse source 
This tunes the entropy model for coarse energy introduced in commit
 c1c40a76.
It uses a constant set of parameters, tuned from about an hour and a
 half of randomly selected test data encoded for each frame size,
 prediction type (inter/intra), and band number.
These will be slightly sub-optimal for different frame sizes, but
 should be better than what we were using.

For inter, this saves an average of 2.8, 5.2, 7.1, and 6.7 bits/frame
 for frame sizes of 120, 240, 480, and 960, respectively.
For intra, this saves an average of 1.5, 3.0, 4.5, and 5.3 bits/frame
 (for the same frame sizes, respectively).
This commit is contained in:
Timothy B. Terriberry 2010-11-09 01:43:18 -08:00 • committed by Jean-Marc Valin
parent 99a19474a0
commit ef2e650592
9 changed files with 108 additions and 94 deletions
Download patch file Download diff file Expand all files Collapse all files

5
libcelt/modes.c
View file

@ -454,10 +454,6 @@ CELTMode *celt_mode_create(celt_int32 Fs, int frame_size, int *error)
)
goto failure;
mode->prob = quant_prob_alloc(mode);
if (mode->prob==NULL)
goto failure;
if (error)
*error = CELT_OK;
@ -486,7 +482,6 @@ void celt_mode_destroy(CELTMode *mode)
celt_free((celt_int16*)mode->cache.index);
celt_free((unsigned char*)mode->cache.bits);
clt_mdct_clear(&mode->mdct);
quant_prob_free(mode->prob);
celt_free((CELTMode *)mode);
#endif