Major wave form discrepancy between signals decoded from 13.2kbps bitstream encoded by fixed- and floating-point encoders from -36LKFS 16k HOA3 audio

Basic info

• Float reference:
  • Encoder (float):00ba8bcd
  • Decoder (float):00ba8bcd
• Fixed point:
  • Encoder (fixed):24f29d12

Bug description

Bit rate: 13.2kbps

Input signal level: -36LKFS

Sample rate: 16kHz

Input format: HOA3

Ways to reproduce

Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1196

Command lines: see cmds.txt in the above Box folder

${BINPATH}/IVAS_cod -no_delay_cmp -sba 3 13200 16 ${TVPATH}/am4aa1s07_HOA3_16_-36.wav ${OUTPATH}/am4aa1s07_HOA3_16_-36_13200_CTX_dut.g192
${BINPATH}/IVAS_dec_ref -no_delay_cmp HOA3 16 ${OUTPATH}/am4aa1s07_HOA3_16_-36_13200_CTX_dut.g192 ${OUTPATH}/am4aa1s07_HOA3_16_-36_13200_CTX_dut_HOA3_ref.wav
${BINPATH}/IVAS_cod_ref -no_delay_cmp -sba 3 13200 16 ${TVPATH}/am4aa1s07_HOA3_16_-36.wav ${OUTPATH}/am4aa1s07_HOA3_16_-36_13200_CTX_ref.g192
${BINPATH}/IVAS_dec_ref -no_delay_cmp HOA3 16 ${OUTPATH}/am4aa1s07_HOA3_16_-36_13200_CTX_ref.g192 ${OUTPATH}/am4aa1s07_HOA3_16_-36_13200_CTX_ref_HOA3_ref.wav