# Basic info <!--- Add commit SHA used to reproduce--> - Float reference: - Encoder (float): - Decoder (float): - Fixed point: - Encoder (fixed): cf7f073c2 - Decoder (fixed): cf7f073c2 # Bug description residu_ivas_fx was pointed out as a possibly duplicated functions. There are many residu\_ functions, but the ivas implementation is the only one computing the residu on a 32 bits input/output, so it has to be kept. But the implementation was buggy and used unnecessary complexity as the first samples of the filtering was not multiplied by a\[0\] (it is ok only if a\[\] is in Q15, which is not the case most of the time) and the inner loop was using 4 operations, while it can be done in only 1. residu_ivas_fx() is used in SynthesisSTFT_dirac_fx(), SynthesisSTFT_fx() and tdm_lp_comparison_fx() , will likely affect some renderer condition, acelp_decoder masking noise and TD_stereo. # Ways to reproduce Box folder: ...\\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\\issues\\issue-xxxx <!--Commandline or script--> ```bash ``` <!--- 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.-->