# Basic info <!--- Add commit SHA used to reproduce--> - Fixed point: - Encoder (fixed):571ad39a # Bug description With attached music item, a saturation assert happens during the stereo pre-processing for MDCT-Stereo at 48 kbps: ``` Assertion failed: (0), function L_add, file basop32.c, line 1661. fish: Job 1, '/Users/knj/Documents/IVAS/ivas-…' terminated by signal SIGABRT (Abort) ``` Problem happens in frame 348 in the outer L_add call at `lib_enc/ivas_mdct_core_enc_fx.c:902`: {width="1623" height="833"} # Ways to reproduce Box folder: ...\\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\\issues\\issue-1480 <!--Commandline or script--> ```bash ./IVAS_cod_fx -stereo -dtx -max_band fb 48000 48 vogue_44.wav bit ``` <!--- 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.-->