Stay safe on the roads...
The oscilloscope image was produced by Redcat on the EEV Blogspot
(URL: http://www.eevblog.com/forum/beginners/hello-to-the-eevblog-forum-and-a-little-christmas-season-oscilloscope-image/msg346205/#msg346205).
It is part of a growing new art form - Oscilloscope Art. If you want to see what can be done with an audio source and an oscilloscope, take a peek at the following YouTube videos:
https://www.youtube.com/watch?v=ytnt9l_WKxk
https://www.youtube.com/watch?v=ZaTuFB5QXHo
https://www.youtube.com/watch?v=YqSvkNjWnnQ