# Basic info <!--- Add commit SHA used to reproduce--> - Fixed point: f99c9ea33948e711454b4e2585d718c989e14c2c (latest main) # Bug description At the first actively coded frame after a DTX period, there is an artifact occurring in the BWE part of the spectrum at. This is a follow-up from #1311.. See artifact in the spectrogram at 13.5s: {width=437 height=702} # Ways to reproduce Box folder: ...\\Box_EXTERNAL_IVAS_BASOP_VERIFICATION\\issues\\issue-1311 <!--Commandline or script--> ```bash ./IVAS_cod_fx -q -dtx -stereo -max_band FB 80000 48 stereo-noisy_speech-p800-2-cat1-lab_b-20ms_aligned_files_concatenated_48.wav out/stereo-noisy-speech.stereo-noisy_speech-p800-2-cat1-lab_b-20ms_aligned_files_concatenated[0dB].enc[48kHz-FB-80000-dtx-fx].192 ./IVAS_dec_flt_ref -q stereo 48 out/stereo-noisy-speech.stereo-noisy_speech-p800-2-cat1-lab_b-20ms_aligned_files_concatenated[0dB].enc[48kHz-FB-80000-dtx-fx].192 out/stereo-noisy-speech.stereo-noisy_speech-p800-2-cat1-lab_b-20ms_aligned_files_concatenated[0dB].enc[48kHz-FB-80000-dtx-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.-->