raspberry-pi-projects/raspberry.md

connect via SSH

Useful commands

• see connected usb devices

  • lsusb

• arecord -l

• test audio

• arecord --format=S16_LE --duration=5 --rate=16000 --file-type=raw out.raw

• arecord --format=S16_LE --duration=5 --rate=16000 -c1 test.wav

.asoundrc

pcm.!default { type asym capture.pcm "mic" playback.pcm "speaker" } pcm.mic { type plug slave { pcm "hw:1,0" } }

44200 sampling rate 5 secs 230000 array length