Published - 5 years ago ( Updated - 5 years ago )
Query available microphones
You can use arecord -l to list all microphones
Recording
Choose to use card 1 to record cd-quality sound, -d will automatically stop after 5 seconds (48k 16bit)
Choose to use card 2 to record high-quality sound (192k 24bit)
Play
You can use arecord -l to list all microphones
root@raspberrypi:~# arecord -l
**** List of CAPTURE Hardware Devices ****
card 1: CameraB404271 [USB Camera-B4.04.27.1], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
card 2: B20 [BLUE USB Audio 2.0], device 0: USB Audio [USB Audio]
Subdevices: 1/1
Subdevice #0: subdevice #0
Recording
Choose to use card 1 to record cd-quality sound, -d will automatically stop after 5 seconds (48k 16bit)
arecord -D plughw:1 -d 5 -c 4 -r 48000 -f S16_LE test.wav
Choose to use card 2 to record high-quality sound (192k 24bit)
#192k 24bit
arecord -D plughw:2 -c 4 -r 192000 -f S24_LE test.wav
Play
aplay test.wav
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