Spectral differences observed between signals decoded from fixed- and floating-point encoded bitstream with 48k sampled HOA3 speech input at 16LKFS and 13200 bps

Basic info

• Float reference:
  • Encoder (float): 5067d70d
  • Decoder (float): 5067d70d
• Fixed point:
  • Encoder (fixed): 794bda24

Bug description

Input format: HOA3

Content: Janpanese male/female over talk

DTX: True

Bitrate: 13.2kbps

Signal level: -16LKFS

Sample rate: 48kbps

Observation: As illustrated in the screen capture below.

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1249

Commands line: see cmds.txt in Box folder