harmonization of mult_harm

Basic info

• Float reference:
  • Encoder (float):
  • Decoder (float):
• Fixed point:
  • Encoder (fixed): a9c6f8d8
  • Decoder (fixed):

Bug description

multi_harm_ivas_fx and multi_harm_fx are almost exactly the same, except for a few lines. Will harmonize them in a BE way to prevent encoder deviation.

Ways to reproduce

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