Build Instructions

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• 1

  Choose your scary audio.

  I have chosen mine by going through Pixibay, and chose Sound Effect by Charlie Raven from Pixabay.
  

• 2

  Use audacity to downsample audio to 8khz

  You can use any audio processor but I used Audacity.
  

  Step one:

  Click Audio Set Up -> Select Audio Settings

  
  In audio settings change project sample rate to 8000hz.

  Step two:

  Export it as an MP3 and force export to mono

• 3

  Use an Audio Encoder made by High-Low Tech to create the Arduino variable

  Found towards the bottom of this article http://highlowtech.org/?p=1963. That article is also a great resource for making projects like this so I would recommend reading the whole thing.

  Copy the output of that encoder and paste it into the variable sample[] PROGMEM on line 4 of the program.
  

  
  Photo of my terminal when running the encoder.
  

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