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43e94062
– Timothy B. Terriberry <
[email protected]>
authored
and Jean-Marc Valin <
[email protected]>
committed
on 2010/05/29 19:02
Change ec_{enc|dec}_bit_prob to take probabilities in units of 1/65536 instead of 1/256. This allows them to use a single 16x16->32 multiply instead of a 24x8->32 multiply. Also change the time-frequency resolution flag coding to ensure that "0" is always the most-probable symbol (i.e., that prob("1")<50%), as that's where all the rounding error accumulates.
299747ee
– Timothy B. Terriberry <
[email protected]>
authored
and Jean-Marc Valin <
[email protected]>
committed
on 2010/05/29 18:47
Provide direct implementations ec_{enc|dec}_bit_prob() that do not require a division instead of using the normal entropy coder path. This should be exactly equivalent to the existing code.
9d420c58
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/28 13:26
Viterbi-based RD optimization of the tf_res decisions
581fdba9
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/28 02:56
changing probability of first tf resolution symbol
8035b658
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/27 12:23
Adds a range coder call to encode a single bit with arbitrary probability
20639c41
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/19 12:10
Tuned the 5ms mode to have a band at 4 kHz and one at 8 kHz
f5e2e32d
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/19 08:05
Support for passing your own ec state to the decoder
4794f2ec
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/19 07:56
Support for passing your own ec state to the encoder
72c97f56
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/18 19:19
Sharing more code between encode and decode (bis)
2e8ba548
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/12 20:04
New band splitting method based on the stereo code
e949b720
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/07 03:48
Fixed pitchEnd wrt to variable frame size. It should (sort of) all work now
ce4dd367
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/07 03:45
More work on variable frame size (getting rid of FRAMESIZE() )
3b918bac
– Jean-Marc Valin <
[email protected]>
authored
on 2010/05/04 20:02
replaced instances of mode->nbShortMdcts by the dynamic number of MDCTs (M)
f7547a4e
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/28 18:10
Shrinking the MDCT's table by separately rotating by the 1/(8N) factor
65ee67ac
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/26 03:08
Making the band definition the same at all frame sizes.
4fb95687
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/20 19:30
Bands are now (again) a multiple of the number of short MDCTs
d6b79eeb
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/20 13:31
Skipping transient shape renormalisation in the encoder because
281a63ea
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/20 06:43
Bump bitstream version now that we broke everything
8271dc8a
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/19 20:47
Tuning the amount of spreading based on Koen's feedback
9c30de57
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/19 09:32
Improved transient_analysis() by adding one frame of memory.
b8ba70c9
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/18 18:10
Disabling resynthesis when not needed (need to remove folding for this to work)
b8a06ee0
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/18 05:57
Re-introducing the successive spreading rotations, but in a two-step
628c0253
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/16 16:57
Converted a few double-precision constants to single precision
3ff5e4c2
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/14 14:02
Making sure compute_allocation_table() doesn't overrun at lower sampling rates
137f3366
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/14 13:42
Changed compute_allocation_table() so it handles ebands that start and end in the same allocation band. Also fixed a minor C89 issue.
31bec963
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/07 14:30
Fix small mode leak (forgot to free the new logN array).
f400a3c5
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/05 19:58
Caching log2_frac(N, BITRES) in the more data to save some CPU
64209a3e
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/05 05:26
A few minor optimisations (compute_allocation, denormalise_bands,
9a92d61e
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/03 12:30
A bit more tuning on the pseudo-frac-Hadamard. Also Trying to improve
354bf60b
– Jean-Marc Valin <
[email protected]>
authored
on 2010/04/03 05:23
Doing the spreading with a "pseudo-fractional-Hadamard" transform
8974f00d
– Jean-Marc Valin <
[email protected]>
authored
on 2010/03/19 20:41
fixed-point: improving accuracy of the energy prediction
c7b01bad
– Jean-Marc Valin <
[email protected]>
authored
on 2010/03/19 19:17
fixed-point: slightly increasing the decoder accuracy again
dc8a6eee
– Timothy B. Terriberry <
[email protected]>
authored
and Jean-Marc Valin <
[email protected]>
committed
on 2010/03/15 19:49
Update the log2 approximation to accomodate the increased bit precision from bd0610d21b28b76095a49e601df44fb792b96369. This requires another term in the power series to reduce the error to the level of truncation (peak absolute error 0.621785). Also refactor the rounding bias term so that further changes to DB_SHIFT will leave the result unbiased.
70bdf9bf
– Jean-Marc Valin <
[email protected]>
authored
on 2010/03/15 16:50
fixed-point: reducing the mismatch in the folded part
210ccafa
– Jean-Marc Valin <
[email protected]>
authored
on 2010/03/11 17:20
Improves fixed-point precision for quant_coarse_energy
6c79a932
– Jean-Marc Valin <
[email protected]>
authored
on 2010/01/16 18:35
Getting "make dist" to work again with the files that got removed
74128bef
– Jean-Marc Valin <
[email protected]>
authored
on 2010/01/01 04:33
fixed-point: converted PLC filters and LPC parameters
07fed1bf
– Jean-Marc Valin <
[email protected]>
authored
on 2009/12/28 02:59
Adding a safeguard against unstable LPC, so now there's no way (that I can
d69c1cb3
– Jean-Marc Valin <
[email protected]>
authored
on 2009/12/27 19:34
Making new PLC code work in fixed-point even though it's still using float
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