null
    Discard all samples (playback) or generate zero samples (capture)
pipewire
    PipeWire Sound Server
default
    Default ALSA Output (currently PipeWire Media Server)
sysdefault:CARD=Audio
    Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audi
    Default Audio Device
hdmi:CARD=Audio,DEV=0
    Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audi
    HDMI Audio Output
hdmi:CARD=Audio,DEV=1
    Intel HDMI/DP LPE Audio, Intel HDMI/DP LPE Audi
    HDMI Audio Output
sysdefault:CARD=rt5640
    sof-bytcht rt5640, 
    Default Audio Device
