Narrowband difference between BASOP decoder and float decoder with McMASA bitstream

Basic info

• Float reference:
  • Encoder (float): e15ad0ad
• Fixed point:
  • Encoder (fixed): 54186be9
  • Decoder (fixed): 54186be9

Bug description

There is a peculiar difference present in spectrograms of McMASA bitstream rendered with BINAURAL_ROOM_IR output. See below

This is not exactly that radically audible but it is still quite peculiar. This is also present with BASOP encoded bitstream. There is quite a bit of MLD score (over 16) for this but part of that might be explained by rate switching as well.

Ways to reproduce

Use following command lines to replicate with rate switching file mcmasa_7_1_4_techs_start_13k2_20frames.bin

IVAS_cod -mc 7_1_4 -max_band fb mcmasa_7_1_4_techs_start_13k2_20frames.bin 16 ltv16_MC714.wav test_0212.bs
IVAS_dec BINAURAL_ROOM_IR 32 test_0212.bs 0212_ltv16_MC714.wav_mcmasa_7_1_4_techs_start_13k2_20frames_16-32___BINAURAL_ROOM_IR.wav