BWE artifact for OMASA 1 object -16 LKFS/-26 LKFS 24.4 and 48 kbps (c12 and c14 in P800-18)

Basic info

• Float reference:
  • Encoder (float): d4fe090c (20250826_branch_release_characterization_testing_ivas-float-update)
  • Decoder (float): d4fe090c
• Fixed point:
  • Decoder (fixed): 7d39c224 (20250826_branch_release_characterization_testing_main)

Bug description

Overshoot in BWE for OMASA 1 object, 24.4 kbps, FL enc->FX dec.

FL enc -> FX dec

FL enc -> FL dec

Ways to reproduce

Box folder: ...\_EXTERNAL_IVAS_CHAR_MC\Issues\basop-issue-2000

INPUT=cat5_concatenated
execs_flp_d4fe090c5/IVAS_cod.exe -ism_masa 1 2 $INPUT.wav.0.csv $INPUT.wav.met 24400 48 $INPUT.wav $INPUT.ivas.192
execs_fxp_7d39c224e/IVAS_dec.exe BINAURAL 48 $INPUT.ivas.192 $INPUT.ivas.wav