# Basic info <!--- Add commit SHA used to reproduce--> - Float reference: - Encoder (float): b63c033f6 - Decoder (float): b63c033f6 - Fixed point: - Encoder (fixed): - Decoder (fixed): 291c48d32 # Bug description There are multiple case in our internal tests where the combination of MASA 2TC LTV test vectors processed with BASOP decoder to MONO output provides a bit higher MLD score (up to about 10 MLD). When analyzing these, there is no direct clear effect present other than some diff showing up. There could clues for at least two different factors contributing to the score. Based on below spectrograms, my first guess for a source would be the same as in issue #1348. Another source could be the stereo mode detection (within DirAC renderer MASA path) having some numerical issues. Finally, the spectrogram is showing also high frequency (seems to be highest CLDFB band) modulation shown in #1040. This effect is not so much audible but having a bit higher score for float ENC -> BASOP DEC at this point is a bit surprising.  # Ways to reproduce <!--Commandline or script--> ```bash IVAS_cod -masa 2 ltv48_MASA2TC.met -max_band wb 192000 48 ltv48_MASA2TC.wav test_0368.bs IVAS_dec MONO 48 test_0368.bs 0368_ltv48_MASA2TC.wav_192k_48-48___MONO.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.-->