Stereo Encoder 13.2 kbps: Wrong Classification for Noisy Content on LTV
# Basic info <!--- Add commit SHA used to reproduce--> - Float reference: - Encoder (float): f2eb9e0831ece72ec66a0c07e62d1f3302e2a910 - Decoder (float): f2eb9e0831ece72ec66a0c07e62d1f3302e2a910 - Fixed point: - Encoder (fixed): 28058dcee46d9e1eed0c3459b8e0a61254c1ffee - Decoder (fixed): n/a # Bug description For 13.2 kbit/s, the noise portion in the LTVs from 0:38.3 - 0:40.3 (left channel) seems to get classified differently between BASOP and Float encoder. The issue is also visible at 16.4 kbit/s, but not at 24.4 kbit/s. BASOP: ![Bildschirmfoto 2025-03-12 um 16.58.53.png](/uploads/401ccfcdca9850b4bceb71ae812d6cb1/Bildschirmfoto_2025-03-12_um_16.58.53.png){width="1131" height="839"} Float: ![Bildschirmfoto 2025-03-12 um 16.59.00.png](/uploads/986f4221317cb387d0b0b0170d51975c/Bildschirmfoto_2025-03-12_um_16.59.00.png){width="1131" height="839"} It sounds as if for BASOP one of the transform cores (HQ?) is selected, and it sounds significangtly worse than in Float. # Ways to reproduce <!--Commandline or script--> ```bash IVAS_cod -stereo 13200 32 ivas-pc-testfiles/ltv32_STEREO.wav ltv32_STEREO_13k2bps.192 IVAS_dec stereo 32 ltv32_STEREO_13k2bps.192 ltv32_STEREO_13k2bps.wav ``` <!--- Below are labels that will be added but are not shown in description. This is a template to help fill them. Add further information to the first row and remove and add labels as necessary.-->
issue