Energy leaking into LFE channel in signal decoded from fixed-point encoded bitstream with 7_1_4 input at 160kbps, 48kHz sampled and -16LKFS leveled

Basic info

• Float reference:
  • Encoder (float):ecb2d1dd
  • Decoder (float):ecb2d1dd
• Fixed point:
  • Encoder (fixed):b1680a6d
  • Decoder (fixed):

Bug description

Signal decoded from float encoder, first 4 channels:

Signal decoded from fixed encoder, first 4 channels:

MLD at ~24

Input vector: am3aa1s13/bm3ba1s13

Input format: 7_1_4

Sample rate: 48kHz

Bitrate: 160kbps

Input level: -16LKFS

Regression: MLD at ~-14 at commit 24cb7eef, an MLD regression >10 points.

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1316

See cmds.txt in the Box folder for command lines.