# Using the CM3-PANEL-POE-7 audio

List of playback audio 

	aplay
	
	**** List of PLAYBACK Hardware Devices ****
	card 0: sndrpihifiberry [snd_rpi_hifiberry_dacplus], device 0: HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0 [HiFiBerry DAC+ Pro HiFi pcm512x-hifi-0]
  	Subdevices: 1/1
  	Subdevice #0: subdevice #0
	
Speaker test

	speaker-test -c2 -t sine -f 880
	
USB microphone test

	arecord -D plughw:1,0 -d 5 -f out.wav && aplay -D plughw:0,0 out.wav