BWE Energy missing between 16kHz and 20 kHz

Basic info

• Float reference:
  • Encoder (float): f7116b16
  • Decoder (float):
• Fixed point:
  • Encoder (fixed): 3f91f622
  • Decoder (fixed):

Bug description

Some energy is missing in the fixed point compared to the floating point for the higher part of the spectrum (>16kHz). This is present only at 32kps. Both TD and FD stereo are affected.

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1493

IVAS_cod -stereo 32000 48 ap03a5s01.wav bit
IVAS_dec STEREO 48 bit syn