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* Minimal implementation of AT3P bitstream for residual signal.Daniil Cherednik2025-04-191-1/+20
| | | | | | | | * Write scale factor index, wordlen, codetable directly (without VLC) * Use huffman tables for mantisas * Some draft of the library to simplify bit allocation code * Tonal encoding teporary disabled * Allow c++14
* [AT3P] MDCT codeDaniil Cherednik2025-01-251-0/+15
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* Merge branch 'new_psy' into at3plus-devDaniil Cherednik2025-01-041-0/+1
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| * Merge branch 'master' into new_psyDaniil Cherednik2024-12-221-3/+1
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| * | [AT3] Introduce energy aware quantizationDaniil Cherednik2024-12-151-0/+2
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* | | Merge branch 'master' into at3plus-devDaniil Cherednik2024-12-241-4/+1
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| * | [refactoring] Get rid of TFloat parameter. Use float.Daniil Cherednik2024-12-211-4/+0
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| * | [refactoring] Get rid of inheritance from data.Daniil Cherednik2024-12-121-0/+1
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* | [AT3P] GHA development:Daniil Cherednik2024-10-061-0/+1
| | | | | | | | | | | | | | * Multidimensional gha, rework residual check * Possibility to look into the next frame during GHA * Possibility to pass envelope into bitstream * Tool to create oma file from tsv gha description (to test envelope processing)
* | [AT3P] Part of naive GHA processorDaniil Cherednik2024-08-111-0/+19
| | | | | | | | | | | | | | * extract sinusoids parameters one by one. It is simple and fast but probably will not work well on the real musical signals * envelope is not passed to the output. Envelope handling must be improved
* | [AT3P] Add GHA related bitstream codeDaniil Cherednik2024-07-311-0/+20
|/ | | | | | | | * borrow Huffman table from FFmpeg * code (with ut) to pack frequency part of GHA block * some related data structures * bitstrem modification to write correct GHA block * switch compile flag to use float data type
* Allow to configure atracdenc to use float instead of doubleDaniil Cherednik2024-07-091-0/+4
| | | | | | | | | The default is double for hystorical reason. Actually no any reason to use double precision float point calculation for all processing. AT3P encoding will use float except places were we really need double precision. So this default will be changed to float in near future and this option will be removed.
* [refactoring] move some libraries in to library directoryDaniil Cherednik2024-06-171-11/+11
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* [AT3P] Use fast DCT-IV calculation for PQFDaniil Cherednik2024-06-161-0/+2
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* [AT3P] PQF implementationDaniil Cherednik2024-06-141-0/+1
| | | | M=16 perfect reconstruction polyphase quadrature analysis filter bank
* Simple ipqf test and ref filesDaniil Cherednik2024-06-141-0/+25
| | | | ref files contains samples just before and after ipqf
* Get rid of gtest files. Use system package if available.Daniil Cherednik2023-11-181-25/+4
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* Run ut via ctestDaniil Cherednik2022-02-211-0/+3
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* UT refactoringDaniil Cherednik2020-01-041-55/+10
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* Support for MS Windows platformDaniil Cherednik2019-05-151-0/+2
| | | | | | - VS build (2017 tested) - Media Foundation Framework support to read/write pcm data (instead of libsndfile)
* Refactoring: use normal (previous frame is first) overlap buffer layoutDaniil Cherednik2017-08-051-0/+1
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* Support of big endian platformsDaniil Cherednik2016-11-271-1/+6
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* kiss_fft library added, MDCT reimplemented via FFT:Daniil Cherednik2016-09-271-4/+6
| | | | | | - we need fft for some atrac3 features - we need fft to implement better psychoacoustics analysis - use single transform library
* fix compilation errors in case of building without utDaniil Cherednik2016-09-251-0/+16
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* Dirty implementation of atrac3 encoder:Daniil Cherednik2016-09-021-1/+34
| | | | | | | - no JS mode - constant quantiser for tonal components - gain controll implemented but produces some artifacts with real signals. - etc...
* atracdenc ut added to CMake buildDaniil Cherednik2016-04-021-0/+14
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* bitstream ut added to CMake buildDaniil Cherednik2016-03-311-0/+7
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* mdct ut added to CMake buildDaniil Cherednik2016-03-311-0/+8