# Basic info Related to #1267 <!--- Add commit SHA used to reproduce --> - Float reference: - Encoder (float): d3f01fcfb24df875b610c5c83cb1739811073deb - Decoder (float): - Fixed point: - Encoder (fixed): 182c2a508d977504aebc10cda7b56b7abe5b5a80 - Decoder (fixed): # Bug description For 16kHz inputs to ParamMC, the BASOP Encoder exhibits high MLD values (30 and above) across all multichannel formats. This holds true for non scaled inputs as well as ±10dB scaled inputs, with +10dB scaling producing the highest MLD results. This issue seems to be most severe for this one 5.1+4 test item resulting in an MLD of 68.80. There is a loudness difference of 2.84 LUFS visble in the below screenshots: Float reference (-12.08 LUFS): {width=887 height=740} BASOP Encoder (-9.24 LUFS): {width=892 height=741} Comparison: {width=693 height=559} MLD was measured on 16kHz outputs resampled to 48kHz, while loudness values are reported for the 16kHz outputs. # Ways to reproduce Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1583 <!-- Commandline or script --> ```bash ./IVAS_cod_fx -mc 5_1_4 -max_band WB 96000 16 am3aa1s02_16.10dB.wav bit ./IVAS_dec_flt_ref 5_1_4 16 bit out.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. -->