The same trick was used in the soundtrack of the new Doom game: http://www.factmag.com/2016/05/30/doom-game-pentagrams-soundtrack-spectrogram/ http://www.factma

The same trick was used in the soundtrack of the new Doom game: http://www.factmag.com/2016/05/30/doom-game-pentagrams-soundtrack-spectrogram/ http://www.factmag.com/2016/05/30/doom-game-pentagrams-sound...