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* Optimize silk_LPC_inverse_pred_gain() for ARM NEONLinfeng Zhang2017-02-141-2/+2
| | | | | | | | The optimization is bit exact with C function. Change-Id: Ib3bdc26a5a4ebe02e7f24be85104e8e9a2a9a738 Signed-off-by: Jean-Marc Valin <jmvalin@jmvalin.ca>
* take advantage of more efficient NLSF quantization by reducing number of ↵Koen Vos2016-07-171-1/+1
| | | | | | survivors in search JMV: edited to be a little more conservative
* NLSF decoding now uses tables for NLSF weightsKoen Vos2016-07-171-1/+1
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* Remove trailing whitespace from the license headers.Ralph Giles2013-09-161-1/+1
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* Convert quotes in license headers to ASCII.Timothy B. Terriberry2013-05-191-1/+1
| | | | | | Since the last patch originally had them mangled (presumably by mailer, http server, or something else), let's just get rid of them.
* License update using the IETF Trust flavour of the BSD on the Silk codeJean-Marc Valin2012-04-201-17/+17
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* SILK fixes following last codec WG meetingKoen Vos2011-12-131-2/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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
* Reformatting changes with an update to the MSVC project filesKoen Vos2011-10-281-3/+3
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* Fix the side frame conditional coding rules.Timothy B. Terriberry2011-10-171-2/+3
| | | | | | | | | | | | | | | | | | | | 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).
* Removed all the silk_ prefixes in source file names (not symbols)Jean-Marc Valin2011-09-161-0/+115
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* Moved all SILK source code to the silk/ directoryJean-Marc Valin2011-04-281-6/+0
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* Relying on SILK for the switching decisionsJean-Marc Valin2011-04-281-5/+5
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* SILK makefile updateJean-Marc Valin2011-04-271-5/+5
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* Changing the SILK bandwidth only when there's no speechJean-Marc Valin2011-04-271-29/+5
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* SILK updateKoen Vos2011-04-271-5/+29
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* Project files updateJean-Marc Valin2011-03-181-8/+5
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* DTX fixJean-Marc Valin2011-03-171-5/+8
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* Support for glitchles mode switchingJean-Marc Valin2011-03-071-5/+5
| | | | | | 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.
* SILK bugfixJean-Marc Valin2011-03-031-5/+5
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* SILK updateJean-Marc Valin2011-03-021-17/+5
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* SILK/CELT updateJean-Marc Valin2011-02-281-10/+10
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* SILK updateJean-Marc Valin2011-02-171-5/+17
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* fix make distJean-Marc Valin2011-02-151-5/+5
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* missing filesJean-Marc Valin2011-02-141-8/+5
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* SILK and CELT updatesJean-Marc Valin2011-02-141-5/+8
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* Update for in-band FECKoen Vos2011-02-141-9/+5
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* Update Opus range coder due to CELT refactoring.Timothy B. Terriberry2011-02-031-5/+9
| | | | | The byte buffer is now part of the range coder struct itself, and rangeenc.c and rangedec.c have gone away.
* Build fixesJean-Marc Valin2011-02-031-5/+5
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* Testing the range coder final stateKoen Vos2011-02-031-5/+5
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* SILK updateJean-Marc Valin2011-02-021-5/+5
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* SILK updateJean-Marc Valin2011-02-021-5/+5
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* SILK update (fixing segfault) and MSVS fixJean-Marc Valin2011-02-021-5/+5
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* SILK updateJean-Marc Valin2011-02-021-5/+5
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* Disabling debugJean-Marc Valin2011-01-311-5/+5
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* Adding missing SILK files to the buildJean-Marc Valin2010-11-131-5/+5
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* Updated to follow changes in SILK APIJean-Marc Valin2010-11-121-5/+5
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* SILK build updateJean-Marc Valin2010-07-081-5/+5
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* Build updateJean-Marc Valin2010-07-081-5/+5
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* autotools-based build systemJean-Marc Valin2010-07-081-5/+5
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* Adds a _ctl() control API to the encoder and decoderJean-Marc Valin2010-07-061-5/+5
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* Fixing a high bit-rate bug in SILK -- now scales well above 64 kb/sJean-Marc Valin2010-07-051-5/+5
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* silk update (ec_enc_done())Jean-Marc Valin2010-07-041-5/+5
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* SILK update (interface for using the CELT range coder)Jean-Marc Valin2010-07-041-5/+5
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* gitignore filesJean-Marc Valin2010-07-031-5/+5
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* SILK updateJean-Marc Valin2010-06-301-5/+5
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* Updated SILK versionJean-Marc Valin2010-06-301-4/+5
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* Added SILK submoduleJean-Marc Valin2010-06-291-0/+5
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