Built by Stephen LaPorte and Mahmoud Hashemi using D3 and HowlerJS. It is based on Listen to Bitcoin by Maximillian Laumeister.
This d3 with audio web application visualizes and sonifies the wikipedia edit stream. The effect convinces us that something important is happening without saying what that is. site 
Bells indicate additions and string plucks indicate subtractions. Pitch changes according to the size of the edit; the larger the edit, the deeper the note. Green circles show edits from unregistered contributors, and purple circles mark edits performed by automated bots.