[Regression2553] Stereo Artifacts for 32 kbps MASA 2TC

Basic info

  • Fixed point:
    • Encoder (fixed): 496d928d
    • Decoder (fixed):

Bug description

Seems that !2553 (merged) introduced some stereo artifacts for 32 kbps, MASA 2TC:

Bildschirmfoto 2026-04-09 um 14.46.13.png

The components leaking to the other channel and click/burst at approx. 5s is not present in the previous version or in float.

Ways to reproduce 

IVAS_cod -masa 2 ltv48_MASA2TC.met 32000 48 ltv48_MASA2TC_-10dB.wav out.192
IVAS_dec EXT 48 out.192 out.wav