# Basic info <!--- Add commit SHA used to reproduce --> - Float reference: - Encoder (float): d3f01fcfb24df875b610c5c83cb1739811073deb - Decoder (float): d3f01fcfb24df875b610c5c83cb1739811073deb - Fixed point: - Encoder (fixed): 149cfbaae31f09ec4615b73792cefe2c2eab4069 - Decoder (fixed): 149cfbaae31f09ec4615b73792cefe2c2eab4069 # Bug description The second channel of FOA output from MASA 2TC processing of a noisy selection test item has somewhat weird second channel signal from BASOP decoder. This does not seem to depend too much on bitrate but most clear effects are obtained at higher bitrates where it would be expected that the diff is smaller. Here are example spectrograms for different bitrates ### 24.4 kbps  ### 48 kbps  ### 128 kbps  ### 512 kbps  # Ways to reproduce Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1525 Input file is in the box. <!-- Commandline or script --> ### 24.4 kbps ```bash IVAS_cod -no_delay_cmp -masa 2 BASOP_Selection_MUSHRA-7ab_s10.met -max_band swb 24400 48 BASOP_Selection_MUSHRA-7ab_s10.wav test_3052.bs eid-xor -fer -vbr -bs g192 -ep g192 test_3052.bs ep_10pct.g192 test_3052.bs_eid IVAS_dec -no_delay_cmp FOA 16 test_3052.bs_eid 3052_BASOP_Selection_MUSHRA-7ab_s10.wav_24k4_48-16___FOA-no_delay_cmp.wav ``` ### 48 kbps ```bash IVAS_cod -no_delay_cmp -masa 2 BS1534-7ab_MASA/BASOP_Selection_MUSHRA-7ab_s10.met -max_band fb 48000 48 BS1534-7ab_MASA/BASOP_Selection_MUSHRA-7ab_s10.wav test_3014.bs IVAS_dec -no_delay_cmp FOA 32 test_3014.bs 3014_BASOP_Selection_MUSHRA-7ab_s10.wav_48k_48-32___FOA-no_delay_cmp.wav ``` ### 128 kbps ```bash IVAS_cod -no_delay_cmp -masa 2 BS1534-7ab_MASA/BASOP_Selection_MUSHRA-7ab_s10.met -max_band swb 128000 48 BS1534-7ab_MASA/BASOP_Selection_MUSHRA-7ab_s10.wav test_3047.bs IVAS_dec -no_delay_cmp FOA 32 test_3047.bs 3047_BASOP_Selection_MUSHRA-7ab_s10.wav_128k_48-32___FOA-no_delay_cmp.wav ``` ### 512 kbps ```bash IVAS_cod -no_delay_cmp -masa 2 BS1534-7ab_MASA/BASOP_Selection_MUSHRA-7ab_s10.met -max_band swb 512000 48 BS1534-7ab_MASA/BASOP_Selection_MUSHRA-7ab_s10.wav test_3054.bs eid-xor -fer -vbr -bs g192 -ep g192 test_3054.bs ep_10pct.g192 test_3054.bs_eid IVAS_dec -no_delay_cmp FOA 48 test_3054.bs_eid 3054_BASOP_Selection_MUSHRA-7ab_s10.wav_512k_48-48___FOA-no_delay_cmp.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. -->