[regression-merge] BINAURAL_ROOM_REVERB - high low-freqency differences for 5.1+4 decoder

Basic info

• Float reference (Branch kiene/float-pc-clone-for-merge)
  • Encoder (float): 92d4831d
  • Decoder (float): 92d4831d
• Fixed point (Branch kiene/main-pc-clone-for-merge)
  • Encoder (fixed): n/a
  • Decoder (fixed): cb523613

Bug description

When comparing the output for BINAURAL_ROOM_REVERB rendering, we are seeing relatively big differences, especially at the low frequencies:

Diff (BASOP - Float):

Ways to reproduce

IVAS_dec BINAURAL_ROOM_REVERB 48 stv514MC48c.wav_Multi_channel_5_1_4_at_512_kbps_48kHz_in_48_kHz_out_BINAURAL_ROOM_REVERB_out_default_configuration.192 out.wav

Bitstream (zipped): stv514MC48c.wav_Multi_channel_5_1_4_at_512_kbps_48kHz_in_48_kHz_out_BINAURAL_ROOM_REVERB_out_default_configuration.zip