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- (env) pi@raspberrypi:~/4mics_hat $ arecord -L
- null
- Discard all samples (playback) or generate zero samples (capture)
- playback
- dmixed
- ac108
- multiapps
- mic
- speaker
- default
- Playback/recording through the PulseAudio sound server
- sysdefault:CARD=seeed4micvoicec
- seeed-4mic-voicecard,
- Default Audio Device
- dmix:CARD=seeed4micvoicec,DEV=0
- seeed-4mic-voicecard,
- Direct sample mixing device
- dsnoop:CARD=seeed4micvoicec,DEV=0
- seeed-4mic-voicecard,
- Direct sample snooping device
- hw:CARD=seeed4micvoicec,DEV=0
- seeed-4mic-voicecard,
- Direct hardware device without any conversions
- plughw:CARD=seeed4micvoicec,DEV=0
- seeed-4mic-voicecard,
- Hardware device with all software conversions
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