# Basic info <!--- Add commit SHA used to reproduce--> - Encoder and Decoder (float): db364042fba738d5d0f9823c047e75edea62bae7 - Encoder (fixed): 574a190e3c6896c6c4ed10d7f23649709a0c4347 # Bug description In this selection test stereo item coded at 13.2kbps, the BASOP-encoded output has some (sub)frames with missing energy, for example at about 5.0s: float: {width=428 height=574} BASOP: {width=425 height=571} And at 4.11s, where mainly the high band seems to be affected: float: {width=422 height=567} BASOP: {width=423 height=568} And at 3.46s: float: {width=424 height=570} BASOP: {width=425 height=571} Those issues are not very audible as the general quality at this bitrate and with this challenging item is already quite low. Nevertheless, it would be good to understand where those drops in energy come from. # Ways to reproduce Box folder: ...\\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\\issues\\issue-xxxx <!--Commandline or script--> ```bash ./IVAS_cod_flt_ref -q -stereo -max_band SWB 13200 48 am1aa1s12_48.wav out/stereo-mixed-music.am1aa1s12[0dB].enc[48kHz-SWB-13200-flt].192 ./IVAS_dec_flt_ref -q stereo 48 out/stereo-mixed-music.am1aa1s12[0dB].enc[48kHz-SWB-13200-flt].192 out/stereo-mixed-music.am1aa1s12[0dB].enc[48kHz-SWB-13200-flt].dec[clean-48kHz->stereo-flt].wav ./IVAS_cod_fx -q -stereo -max_band SWB 13200 48 .am1aa1s12_48.wav out/stereo-mixed-music.am1aa1s12[0dB].enc[48kHz-SWB-13200-fx].192 ./IVAS_dec_flt_ref -q stereo 48 out/stereo-mixed-music.am1aa1s12[0dB].enc[48kHz-SWB-13200-fx].192 out/stereo-mixed-music.am1aa1s12[0dB].enc[48kHz-SWB-13200-fx].dec[clean-48kHz->stereo-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.-->