Multi-frame attenuation for MDCT-stereo 48kbps with input +10dB

Basic info

  • Float reference:
    • Encoder (float):b09a7f47
    • Decoder (float):b09a7f47
  • Fixed point:
    • Encoder (fixed):b4a8a48f

Bug description

There is an obvious attenuation for this item for frames from approx. 5.6s-5.8s as can be seen:

Screenshot_2025-02-21_at_12.31.03

and the float version for reference:

Screenshot_2025-02-21_at_12.33.53

It should be noted that the differences in the two versions are large.

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1313

./IVAS_cod -stereo -max_band FB 48000 48 dm1aa1s12_48.10dB.wav out.192
./IVAS_dec stereo 48 out.192 dm1aa1s12[10dB].dec.wav
Edited Feb 21, 2025 by fotopoulou
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