Major spectral discrepancies between signals decoded from 16.4kbps fixed- and floating-point encoded bitstreams from 16kHz HOA3 signal at -16LKFS leveling

Basic info

• Encoder/Decoder (float): 1bde096f
• Encoder (fixed): ccfb90b4

Bug description

Input format: HOA3

Sample rate: 16k

Level: -16LKFS

Bitrate: 16.4k

DTX: False

Observations:

As illustrated below. The same discrepancies are observed across all channels.

Ways to reproduce

Box folder: ...\Box\_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1099

Command lines: see cmds.txt in box folder.