# Basic info <!--- Add commit SHA used to reproduce --> * Float reference: * Encoder (float): fbeb5ef8 * Decoder (float): fbeb5ef8 * Fixed point: * Encoder (fixed): de24537b # Bug description when using the ISM format with 4 objects, the dtx/cng seems to have trouble with the noisy channel, sometimes the energy going down to almost nothing as shown below for channel 3. With the same channel, we can also hear clicks (the 2 first circles, and in the second figure) that are present with or without dtx from top to bottom: - Channel 3 floating point - Channel 3 fixed point - difference - spectrum   # Ways to reproduce Box folder: ...\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\issues\issue-1160 <!-- Commandline or script --> ```bash IVAS_cod -dtx -ISM 4 NULL NULL NULL NULL 48000 48 C:\Temp\bm6ba1s05.wav bit IVAS_dec_flt EXT 48 bit out.fxflt.wav IVAS_cod_flt -dtx -ISM 4 NULL NULL NULL NULL 48000 48 C:\Temp\bm6ba1s05.wav bit.flt IVAS_dec_flt EXT 48 bit.flt out.fltflt.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. -->