Experiment 01 - USB Voice Module Usage

Command Set:

  • arecord -l - Identify microphone card number and device number (note card X and device Y)
  • arecord -L - List available PCM device names (e.g., plughw:1,0)
  • aplay -l - Check speaker/output devices
  • sudo arecord -f S16_LE -r 16000 -c 1 -d 5 /tmp/test_mic.wav - Use default device to record for 5 seconds, 16k/mono/16bit
  • aplay /tmp/test_mic.wav - Play audio

Terminal operation example: (Ensure the voice module and speaker are properly connected)

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