atracdenc/src/atrac/atrac_psy_common_ut.cpp, branch fix_input_file_pathOpenSource ATRAC1 ATRAC3 Encoderhttps://code.mastervirt.ru/atracdenc/atom?h=fix_input_file_path2026-04-19T22:27:45Zatrac3: reimplement tonal encoding. Use flatness-based tonal extraction2026-04-19T22:27:45ZDaniil Cherednikdan.cherednik@gmail.com2026-04-18T14:51:23Zurn:sha1:e784b79cfef682059cf5cc8cf9bed635e714c439
- Add shared CalcSpectralFlatnessPerBfu helper in atrac_psy_common
with BFU-table mapping.
- Implement ATRAC3 tonal extraction: compute MDCT energy, estimate
per-BFU flatness, extract up to 5-bin strongest tonal run in
low-flatness BFUs, and zero extracted bins in residual.
- Map extracted tonal bins into TTonalBlocks and integrate them into
bitstream coding.
- Update ATRAC3 bit allocation - reduce residual bits for BFUs with tonal
blocks, and increase tonal quantizer selection.
- Restore --notonal CLI option in main.cpp for A/B comparison.