Raspberry Recording Guide

by Devin Yang
(This article was automatically translated.)

Published - 4 years ago ( Updated - 4 years ago )

Query available microphones
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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Devin Yang

Feel free to ask me, if you don't get it.:)

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