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NOAA APT decoder

Javadoc
The project is still being developed any feedback would be much apreciated!

Documentation

Audio Format

  • Audio has to be .wav
  • Stereo or Mono (Stereo will be converted to Mono automatically)
  • Sample Rate has to be 20800Hz (Guide on how to resample with audacity below)

Console Application Usage

  1. Download the latest jar release
  2. Execute with java -jar apt-decoder.jar [Input Audio File] [Output Image File] [Options]
java -jar apt-decoder.jar audio.wav output.png

Options

  • -R or --Raw to save a raw version of the output image (no sync, or correction)
  • -D or --Debug to output some debug info

Audacity Resample

  1. Import Audio
  2. Select Track
  3. Tracks -> Resample... -> 20800Hz -> Ok
  4. Change Project Rate to 20800Hz (Usually bottom left)
  5. File -> Export -> Export as WAV
  6. Done