Speaker and Mic Setup

Author: Ramyad Date: 7/25/2019

• List All devices: cat /proc/asound/cards

• List all Playback Devices aplay -l
  See your card and device number
  Note: you need to set volume alsamixer -c <card_number>
  Note: you can also use pacmd set-source-volume <index> <volume>

• List all Recording Devices arecord -l or pacmd list-sources
  See your card and device number

• Control devices with alsamixer, use F6 to select your device:wq

• Set your Recording and Playback Device as the Default PCM Devices, in /etc/asound.conf

pcm.!default {
  type asym
  capture.pcm "mic"
  playback.pcm "speaker"
}
pcm.mic {
  type plug
  slave {
    pcm "hw:<card number>,<device number>"
  }
}
pcm.speaker {
  type plug
  slave {
    pcm "hw:<card number>,<device number>"
  }
}

• Live Streaming

arecord --format=S16_LE --rate=16k -D sysdefault:CARD=1 | aplay --format=S16_LE --rate=16000

• Testing Playback speaker-test -t wav -c 2

• Test Recording Device

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

• Speaker and Mic Volume Control alsamixer -c "card number"