[allow regression] Fix for 3GPP issue 1339: Artifact in IGF part for first active frame after DTX... (!1310) · Merge requests · SA4 / Audio / IVAS BASOP

Fix for 3GPP issue 1339: Artifact in IGF part for first active frame after DTX period in MDCT-Stereo

Enabling allow regression since small deviations in MLD is observed.

Waveform improvement:

Top: Before fix, Bottom: After fix

Spectrogram:

Top: Before fix, Bottom: After fix

The precision loss occurring with spectrum_fx buffer seems to be causing the difference in spectrogram

Edited Mar 20, 2025 by Sandesh Venkatesh

[allow regression] Fix for 3GPP issue 1339: Artifact in IGF part for first active frame after DTX...