Pip:
1) sudo apt install portaudio19-dev
2) pip3 install git+https://github.com/RonyMacfly/LiveCaptionLinux
3) export PATH="/home/$USER/.local/bin:$PATH"
4) Audio mixer -> Volume Control -> Recording -> ALSA plug-in -> Monitor of Built-in Audio Analog Stereo
5) LiveCaptionLinux