null
    Discard all samples (playback) or generate zero samples (capture)
pipewire
    PipeWire Sound Server
default
    Default ALSA Output (currently PipeWire Media Server)
sysdefault:CARD=DWHDMI
    DW-HDMI, dw-hdmi-ahb-audio
    Default Audio Device
sysdefault:CARD=Audio
    On-board Audio, 
    Default Audio Device
