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* Do not check energy aware flag on each loop iterationnew_psyDaniil Cherednik2024-12-221-10/+18
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* Merge branch 'master' into new_psyDaniil Cherednik2024-12-2245-606/+593
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| * [refactoring] Get rid of TFloat parameter. Use float.Daniil Cherednik2024-12-2144-487/+462
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| * fixDaniil Cherednik2024-12-121-0/+1
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| * [refactoring] Get rid of inheritance from data.Daniil Cherednik2024-12-1218-119/+131
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* | [AT3] Attempt to improve quality:Daniil Cherednik2024-12-195-26/+82
| | | | | | | | | | | | * Band energy aware quantization for high frequency bands * Energy aware bit allocation for low frequency bands * Tune bit allocation table and weight coefficients
* | [AT3] Introduce energy aware quantizationDaniil Cherednik2024-12-155-19/+167
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* Tiny quality improvements for ATRAC3 compatible mode:Daniil Cherednik2024-12-017-54/+106
| | | | | * Use adaptive ATH, but efficient is limited due to qmf aliasing. * Use loudness instead of energy to split M/S frame size.
* Reduce hearable noise in some tracks for ATRAC1 encoder.Daniil Cherednik2024-11-031-2/+2
| | | | | | https://hydrogenaud.io/index.php/topic,120193.0.html ATH + changes of bitallocation table allow significant reduce the noise. But some artefacts still present.
* Merge branch 'master' into new_psyDaniil Cherednik2024-11-0214-42/+42
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| * Do not use 8bit, 16bit types if do not realy need it.Daniil Cheredni2024-11-0114-42/+42
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* | Attempt to use adaptive ATH for ATRAC1Daniil Cherednik2024-10-117-18/+100
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* Use ATH during ATRAC1 encodingDaniil Cherednik2024-10-064-15/+47
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* Bring some ATH related code from musepack projectDaniil Cherednik2024-08-032-2/+97
| | | | | | | | | | | Motivations: - We need some psychoacoustic model to apply it in the AT3P during GHA. The idea is try to use ATH along with some tonality measurement to determine whether GHA gives profit or just penalty due to non effitient GHA bit encoding. - We can try to improve AT1 and AT3 quality applying ATH
* Allow to configure atracdenc to use float instead of doubleDaniil Cherednik2024-07-0911-34/+100
| | | | | | | | | 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.
* [AT3P] Improve accuracy of PQFDaniil Cherednik2024-07-082-4/+4
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* Fix missed include in bitstream.hDaniil Cherednik2024-07-071-1/+2
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* [refactoring] move fft in to library directoryDaniil Cherednik2024-07-025-3/+3
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* [refactoring] move some libraries in to library directoryDaniil Cherednik2024-06-1724-690/+19
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* Fix build. Add missed header fileDaniil Cherednik2024-06-161-0/+31
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* [AT3P] Use fast DCT-IV calculation for PQFDaniil Cherednik2024-06-163-19/+45
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* Use well known analyze/synthesis naming instead of split/merge4BDA26H33GTZ4HYUMIO2024-06-157-19/+19
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* [AT3P] PQF implementationDaniil Cherednik2024-06-1411-888/+406
| | | | M=16 perfect reconstruction polyphase quadrature analysis filter bank
* Simple ipqf test and ref filesDaniil Cherednik2024-06-146-1/+324
| | | | ref files contains samples just before and after ipqf
* bitstream.cpp: Add missing <cstdint> headerSatoshi Fuuki2023-12-161-1/+1
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* Fix CMake build file generation errorSatoshi Fuuki2023-12-161-4/+5
| | | Fix "check_compiler_flag: CXX: needs to be enabled before use."
* Fix unused variable warnings.Daniil Cherednik2023-11-183-44/+50
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* Get rid of gtest files. Use system package if available.Daniil Cherednik2023-11-181-6/+0
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* Simplify cmake. Fix warnings.Daniil Cherednik2023-10-245-24/+26
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* Add install commandDaniil Cherednik2023-09-131-1/+1
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* Fix warningsDaniil Cherednik2023-09-104-8/+5
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* Some ux improvementsDaniil Cherednik2023-09-085-34/+74
| | | | | - help page - remove noise messages
* Add support for writing .at3/.wav files with ATRAC3 (#30)Thomas Perl2022-05-085-2/+213
| | | | | | | * Add support for writing .at3/.wav files with ATRAC3 * Check file size limit * AT3/WAV export: Add big endian support, force packed structs
* Complain loudly about unhandled argumentsThomas Perl2022-05-041-0/+5
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* Fix CodeQL (Multiplication result converted to larger type) warningDaniil Cherednik2022-02-222-10/+10
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* Fix some CodeQL warningsDaniil Cherednik2022-02-212-13/+25
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* Support for RealMedia output file format.ghost2022-02-206-16/+340
| | | | ATRAC3 is one of codecs used for RealMedia player.
* Fix incorrect exception catch.Daniil Cherednik2021-10-101-2/+2
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* [refactoring] Split CompressedIO interface for Read and Write partDaniil Cherednik2021-08-2813-149/+190
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* Fix range to search proper bit allocationDaniil Cherednik2020-12-071-3/+3
| | | | In some cases we have quite small target number of bits so we unable to fit without reducing BFU number. But current algorithm starts reduce BFU only after succeful (from bit numbet perspctive) allocation. Which mean we must create zero allocation and only after that we restart allocation with reduced bfu number. The issue was the range to shift SNR was not enough to create zerro allocation in some cases.
* [atrac3] Simple adaptive MS bitrate shiftDaniil Cherednik2020-07-085-10/+61
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* Add atrac3_lp4 cmd alias0.0.3Daniil Cherednik2020-03-281-2/+5
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* Fix linker errorDaniil Cherednik2020-03-271-0/+5
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* Fix project compilationDaniil Cherednik2020-03-272-2/+2
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* [atrac3] 0.83/0.16 M/S bitrate separation for joint stereo codingDaniil Cherednik2020-01-205-28/+79
| | | | support of encoding mono source for joint stereo mode
* [atrac3] Initial joint stereo mode support.Daniil Cherednik2020-01-128-16/+50
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* UT refactoringDaniil Cherednik2020-01-043-19/+23
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* Fix 64bit MSVS buildDaniil Cherednik2020-01-041-1/+1
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* Fast float to nearest int round under 32bit MSVS buildDaniil Cherednik2020-01-041-3/+21
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* Fix compilation on POSIX platforms.0.0.2Daniil Cherednik2020-01-014-5/+5
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