Rough and constricted sounding audio decoded from SBA bitstreams encoded by fixed point encoder at 13.2kbps with -26LKFS input.

Basic info

• Float reference:
  • Encoder (float): de0a9fca
  • Decoder (float): de0a9fca
• Fixed point:
  • Encoder (fixed): cd453935

Bug description

Input format: SBA

Signal level: -26LKFS

Sample rate: 32k, 48k

Encoding bitrate: 13.2kbps

DTX: False

Observations: Following plot illustrates an example of the difference between the signal decoded from fixed- and floating-point encoded bitstreams. This is the W channel of the decoded signals from bitstreams encoded from dm5aa1s11_HOA1_32_-26.wav. The fx output sounds rough and constricted at places.

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1216

Command lines: see cmds.txt in Box folder.