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kumquat-readthedocs/docs/interfaces/audio.md
Lukas Schmid 3db4bf6c12 Add structure for interface docus
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Audio

The Kumquat offers two 3.5mm TRS jacks to access the audio interface. This document will demonstate how to play and record audio using the alsa-utils.

Location Color Description Pinout
Xn Green Headphone Out Headphone Connector Pinout
Xn Pink Microphone In Microphone Connector Pinout

Audio Connector Locations

Prerequisites

Before you begin, make sure you have the following:

  • Headphones or Headset with 3.5mm Audio connector
  • Microphone with 3.5mm Audio connector

Hardware Setup

  • Connect the Headphones or Headset to the green Headphone jack on the Kumquat
  • Connect the Microphone to the pink Microphone jack on the Kumquat

Playing Audio

  • First copy an audio file onto the device. In this example the wget command, which requires an internet connection, will be used. You can however use other methods to copy an audio file onto the device.
  • Use the following command to download an audio file onto the device.
wget https://www2.cs.uic.edu/~i101/SoundFiles/PinkPanther60.wav
  • Enable the audio output using the following command
amixer TODO ...
  • Play the audio file.
aplay PinkPanther60.wav

Recording Audio

  • Enable the microphone input using the following command
amixer TODO ...
  • Record the audio file
arecord -d 10 -f cd -t wav recording.wav
  • Playback the recording using "aplay"
aplay recording.wav