Encoder: 3 ISM, 64 kbps: Too much energy/noise-level in BWE

Basic info

• Float reference:
  • Encoder (float): a6dfe7ea
  • Decoder (float): a6dfe7ea
• Fixed point:
  • Encoder (fixed): dcf1701a
  • Decoder (fixed): n/a

Bug description

Seems that the FX encoder introduces too much energy in the high-band for certain signals for -36 LKFS signals:

BASOP:

Float:

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_CHAR_MC\Issues\basop-issue-2018

IVAS_cod -dtx -ism 3 cat5_concatenated.wav.0.csv cat5_concatenated.wav.1.csv cat5_concatenated.wav.2.csv cat5_concatenated.wav cat5_concatenated_32kbps_DTX.192
IVAS_dec EXT 48 cat5_concatenated_32kbps_DTX.192 out.wav