# Basic info <!--- Add commit SHA used to reproduce --> - Encoder (float): d18cbee3417bc331630e6dcf214908deacdc8167 - Decoder: 34e9657530f06716f52afa2f7c0a6be28cd77efd # Bug description There are several clicks for passthrough MCT-MC 5.1 decoding at 160kbps. The problem can most easily be seen by comparing the STEREO decoder output. This causes a high MLD of 8.34. There is also an entire signal segment between 5.5 - 6.5s where the concealment goes wrong and a tone is produced, this seems like a bug and not a numerical difference. **Diff signal for 5.1 output:**  **Diff signal for STEREO output (replace 5_1 in decoder commandline below):**  # Ways to reproduce Bitstream has been uploaded. ```bash ./IVAS_cod_flt_ref -mc 5_1 -max_band FB 160000 48 experiments/basop-verification/MC-5_1/proc_input/bm2aa1s02.wav out/mc-5_1--bm2aa1s02--160000.192 eid-xor -vbr -fer out/mc-5_1--bm2aa1s02--160000.192 error_patterns/mc-5_1--bm2aa1s02--160000_ep.192 out/mc-5_1--bm2aa1s02--160000.fer.192 ./IVAS_dec_fx 5_1 48 out/mc-5_1--bm2aa1s02--160000.fer.192 out/mc-5_1--bm2aa1s02--160000.fer.dec.5_1.fx.wav ./IVAS_dec_flt_ref 5_1 48 out/mc-5_1--bm2aa1s02--160000.fer.192 out/mc-5_1--bm2aa1s02--160000.fer.dec.5_1.flt.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. -->