Skip to content

OSBA 512 kbps: Differences in low-band

Basic info

Bug description

For OSBA at 512 kbit/s, there are differences in the low-band of the SBA components: Several SBA components (e.g. 6, 8, 11, 13, 15 corresponding to audio channels 10, 12, 15, 17, 19) are almost completely zero. In the floating-point version, there is basically no content below 10 kHz, whereas in BASOP there are some leftovers.

Float:

Bildschirmfoto 2024-11-11 um 12.06.12.png

BASOP:

Bildschirmfoto 2024-11-11 um 12.06.02.png

Ways to reproduce

  • ./IVAS_cod_flt_ref -ism_sba 4 1 4-overlapping-identical-talkers_sp-rot.wav.0.csv 4-overlapping-identical-talkers_sp-rot.wav.1.csv 4-overlapping-identical-talkers_sp-rot.wav.2.csv 4-overlapping-identical-talkers_sp-rot.wav.3.csv -max_band FB 512000 48 4-overlapping-identical-talkers_sp-rot.wav ISM4SBA1--4-overlapping-identical-talkers_sp-rot--512000.192
  • ./IVAS_dec_fx EXT 48 ISM4SBA1--4-overlapping-identical-talkers_sp-rot--512000.192 ISM4SBA1--4-overlapping-identical-talkers_sp-rot--512000.clean.dec.EXT.fx.wav
  • ./IVAS_dec_flt_ref EXT 48 ISM4SBA1--4-overlapping-identical-talkers_sp-rot--512000.192 ISM4SBA1--4-overlapping-identical-talkers_sp-rot--512000.clean.dec.EXT.flt.wav