PipeWire에서 루프백 장치를 생성. 더 많은 정보: https://docs.pipewire.org/page_man_pw-loopback_1.html.
pw-loopback
pw-loopback -m '{{[FL FR]}}' --capture-props='{{media.class=Audio/Sink}}'
pw-loopback -m '{{[FL FR]}}' --playback-props='{{media.class=Audio/Source}}'
pw-loopback -m '{{[FL FR]}}' --capture-props='{{media.class=Audio/Sink}}' --playback-props='{{media.class=Audio/Source}}'
pw-loopback --capture-props='{{media.class=Audio/Sink audio.position=[FL FR]}}' --playback-props='{{audio.position=[FR FL]}}'
pw-loopback --capture-props='{{audio.position=[FR FL]}}' --playback-props='{{media.class=Audio/Source audio.position=[FL FR]}}'