LTV regression from #2507: missing signal

Basic info

• Float reference:
  • Encoder (float):
  • Decoder (float):
• Fixed point:
  • Encoder (fixed): 26ae1a66
  • Decoder (fixed):

Bug description

At 1:28:8, at frame 4440 the first channel should have a short signal burst, but it does not.

At frame 4440 the encoder switches from one SCE to MCT using 4 CPEs. So far no difference in the core coder input was found.

Ways to reproduce

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

IVAS_cod -ism_sba 4 3 ../ltv/ltv48_OSBA_1ISM_HOA3_ISM1.csv ../ltv/ltv48_OSBA_2ISM_HOA3_ISM2.csv ../ltv/ltv48_OSBA_3ISM_HOA3_ISM3.csv ../ltv/ltv48_OSBA_4ISM_HOA3_ISM4.csv scripts/switchPaths/sw_13k2_512k.bin 48 ../ltv/ltv48_OSBA_4ISM_HOA3.wav out.192
IVAS_dec -fr 20 EXT 48 out.192 out3.wav