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Somewhat high MLD in BASOP decoder for McMASA with rate switching and FER

Basic info

Bug description

There is a somewhat high (18.4) MLD score for McMASA BASOP decoder with rate switching and FER involved. Looking at spectrogram does not show any clear reason. Time-domain plot indicates a couple difference spikes but it is hard to say if these are the main reason. Plots below.

Screenshot_2025-05-19_at_12.24.48

Screenshot_2025-05-19_at_12.25.13

Ways to reproduce

Use this rate switch profile mcmasa_7_1_4_techs_start_48k_20frames.bin

IVAS_cod -no_delay_cmp -mc 7_1_4 -max_band wb mcmasa_7_1_4_techs_start_48k_20frames.bin 48 ltv48_MC714.wav test_0010.bs
eid-xor -fer -vbr -bs g192 -ep g192 test_0010.bs ep_10pct.g192 test_0010.bs_eid
IVAS_dec -no_delay_cmp BINAURAL 48 test_0010.bs_eid 0010_ltv48_MC714.wav_mcmasa_7_1_4_techs_start_48k_20frames_48-48___BINAURAL-no_delay_cmp.wav