Intel NUC asound.conf

pcm.!default {
    type plug
    slave.pcm "dmixer"
}

pcm.dsp0 {
    type plug
    slave.pcm "dmixer"
}

pcm.dmixer {
    type dmix
    ipc_key 2048
    slave {
        pcm "hw:CARD=HDMI,DEV=3"
        period_time 0
	buffer_time 0
        period_size 2048
        buffer_size 32768
        periods 128
        rate 48000
	channels 2
     }
     bindings {
        0 0
        1 1
     }
}

ctl.mixer0 {
    type hw
    card 1
}