1. Get an image
2. `$ python spectrogram.py test.jpg` ... `Wrote test.jpg.wav`
3. `$ sox test.jpg.wav -n spectrogram`

Aphex Twin did it before me.

![Image of a dog](test.jpg)

![Spectrogram of a dog](spectrogram.png)

Uses [SoX](http://sox.sourceforge.net/sox.html).