Noise burst artifact in MDCT stereo at 48 kbps

Basic info

• Float reference:
  • Encoder (float): fbeb5ef8 (Mon Dec 16 08:18:57 2024 +0000)
  • Decoder (float): fbeb5ef8 (Mon Dec 16 08:18:57 2024 +0000)
• Fixed point:
  • Encoder (fixed): 293f1da4 (Tue Jan 7 09:23:24 2025 +0000)

Also present with more recent BASOP encoder: 78cb4903 (Mon Jan 20 15:19:47 2025 +0000)

Bug description

Noise burst in right channel at 16.2 seconds.

BASOP from January 20:

Float reference:

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1205

IVAS_cod.exe -stereo 48000 48 am1aa1s16.wav am1aa1s16.ivas.192
IVAS_dec.exe STEREO 48 am1aa1s16.ivas.192 am1aa1s16.ivas.wav