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path: root/silk/float/find_pred_coefs_FLP.c
AgeCommit message (Collapse)Author
2016-06-02Clean up: replace tabs by spacesKoen Vos
2016-06-01undo some loop unrollingKoen Vos
2016-06-01minor clean up of pointer offsetsKoen Vos
2016-06-01simplified computation of LTP coefsKoen Vos
2014-10-04There are no tabs in source code.Timothy B. Terriberry
There is also no trailing whitespace.
2014-10-04Cisco optimization for x86 & fixed pointxiangmingzhu
1. Only for fixed point on x86 platform (32bit and 64bit, uses SIMD intrinsics up to SSE4.2) 2. Use "configure --enable-fixed-point --enable-intrinsics" to enable optimization, default is disabled. 3. Official test cases are verified and passed. Signed-off-by: Timothy B. Terriberry <tterribe@xiph.org>
2013-11-20Constrains accumulated pitch gain to avoid potential instability.Koen Vos
Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
2013-09-17Remove trailing whitespace from the license headers.Ralph Giles
2013-05-20Convert quotes in license headers to ASCII.Timothy B. Terriberry
Since the last patch originally had them mangled (presumably by mailer, http server, or something else), let's just get rid of them.
2012-04-21License update using the IETF Trust flavour of the BSD on the Silk codeJean-Marc Valin
2011-12-14Accuracy improvements to help float implementationsKoen Vos
Also clamps the gain to avoid forcing a float decoder to emulate the state rescaling.
2011-12-13Improves the accuracy such that it matches a float decoder much betterKoen Vos
2011-12-13SILK fixes following last codec WG meetingKoen Vos
decoder: - fixed incorrect scaling of filter states for the smallest quantization step sizes - NLSF2A now limits the prediction gain of LPC filters encoder: - increased damping of LTP coefficients in LTP analysis - increased white noise fraction in noise shaping LPC analysis - introduced maximum total prediction gain. Used by Burg's method to exit early if prediction gain is exceeded. This improves packet loss robustness and numerical robustness in Burg's method - Prefiltered signal is now in int32 Q10 domain, from int16 Q0 - Increased max number of iterations in CBR gain control loop from 5 to 6 - Removed useless code from LTP scaling control - Optimization: smarter LPC loop unrolling - Switched default win32 compile mode to be floating-point resampler: - made resampler have constant delay of 0.75 ms; removed delay compensation from silk code. - removed obsolete table entries (~850 Bytes) - increased downsampling filter order from 16 to 18/24/36 (depending on frequency ratio) - reoptimized filter coefficients
2011-10-29Reformatting changes with an update to the MSVC project filesKoen Vos
2011-10-20Implements hard CBR for SILKJean-Marc Valin
This is achieved by running the encoding process in a loop and padding when we don't reach the exact rate. It also implements VBR-with-cap, which means we no longer need to artificially decrease the SILK bandwidth when it's close to the cap.
2011-10-18Fix the side frame conditional coding rules.Timothy B. Terriberry
b24e5746 introduced changes to LastGainIndex which broke conditional coding for side frames after a mid-only frame (i.e., in a 60 ms frame where the side is coded, not coded, then coded again). These rules were a mess in general, however, because the side channel state kept a different nFramesDecoded count from the mid channel state, and had no way to tell if the prior side frame was coded. This patch attempts to rationalize them by moving the conditional coding decision up to the top level, where all this information is available. The first coded side frame after an uncoded side frame now always uses independent coding. If such a frame is also not the first side frame in an Opus frame, then it doesn't include an LTP scaling parameter (because the LTP state is well-defined).
2011-09-16Removed all the silk_ prefixes in source file names (not symbols)Jean-Marc Valin
2011-04-29Moved all SILK source code to the silk/ directoryJean-Marc Valin
2011-04-28Relying on SILK for the switching decisionsJean-Marc Valin
2011-04-28SILK makefile updateJean-Marc Valin
2011-04-27Changing the SILK bandwidth only when there's no speechJean-Marc Valin
2011-04-27SILK updateKoen Vos
2011-03-18Project files updateJean-Marc Valin
2011-03-17DTX fixJean-Marc Valin
2011-03-08Support for glitchles mode switchingJean-Marc Valin
Uses a 5ms redundant CELT frame embedded into the SILK or hybrid packet to handle the switching. It's still possible to use the PLC-based method when no redundant packet is included.
2011-03-04SILK bugfixJean-Marc Valin
2011-03-02SILK updateJean-Marc Valin
2011-03-01SILK/CELT updateJean-Marc Valin
2011-02-18SILK updateJean-Marc Valin
2011-02-15fix make distJean-Marc Valin
2011-02-15missing filesJean-Marc Valin
2011-02-15SILK and CELT updatesJean-Marc Valin
2011-02-14Update for in-band FECKoen Vos
2011-02-04Update Opus range coder due to CELT refactoring.Timothy B. Terriberry
The byte buffer is now part of the range coder struct itself, and rangeenc.c and rangedec.c have gone away.
2011-02-03Build fixesJean-Marc Valin
2011-02-03Testing the range coder final stateKoen Vos
2011-02-03SILK updateJean-Marc Valin
2011-02-03SILK updateJean-Marc Valin
2011-02-03SILK update (fixing segfault) and MSVS fixJean-Marc Valin
2011-02-02SILK updateJean-Marc Valin
2011-02-01Disabling debugJean-Marc Valin
2010-11-13Adding missing SILK files to the buildJean-Marc Valin
2010-11-12Updated to follow changes in SILK APIJean-Marc Valin
2010-07-09SILK build updateJean-Marc Valin
2010-07-08Build updateJean-Marc Valin
2010-07-08autotools-based build systemJean-Marc Valin
2010-07-06Adds a _ctl() control API to the encoder and decoderJean-Marc Valin
2010-07-06Fixing a high bit-rate bug in SILK -- now scales well above 64 kb/sJean-Marc Valin
2010-07-05silk update (ec_enc_done())Jean-Marc Valin
2010-07-04SILK update (interface for using the CELT range coder)Jean-Marc Valin
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