Click for ParamISM3 at 24.4 kbps JBM decoding to Binaural

Basic info

• Float reference:
  • Encoder (float): db364042
  • Decoder (float): db364042
• Fixed point:
  • Decoder (fixed): aea225ae

Bug description

A click occurs at 18.7s in the fixed point decoded version of the bitstream which is not present in the floating point decoder output. This causes a very high MLD of 52 for 48kHz Binaural output.

This issue is present across sampling rates and also for EXT output, with the worst case MLD at 77 for 32kHz EXT output.

Other places in the fixed point output signal also exhibit signal saturation in comparison to the float reference.

Fixed point:

Float:

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1779

./IVAS_cod_flt_ref -ism 3 bm6aa1s05.0.csv bm6aa1s05.1.csv bm6aa1s05.2.csv -max_band FB 24400 48 bm6aa1s05_48.10dB.wav bit
networkSimulator_g192 dly_error_profile_5.dat bit bit_sim trace 1 0
./IVAS_dec_flt_ref -voip binaural 48 bit_sim float.wav
./IVAS_dec_fx -voip binaural 48 bit_sim fixed.wav