Stepper Choir is a short documentary about Ezra Teboul’s audio installation project of the same name. Here’s what Ezra had to say about the project:

Because 3D printer use stepper motors which change speed very frequently, and because each of the three motors buzz at a pitch corresponding to those speeds, a 3D printer is in effect a 3 voice harmony generator. Working with multichannel sound and a couple of purpose-built software systems, plastic layering instruction code is translated to spatialization data so that these sounds of the 3D printer can be amplified and made to follow the physical movements of its printer head in the studio: a magnified acoustic version of the small volume of the printer bed. Stepper Choir is about composing sounds with shapes, on the terms of the machine, to use the printer as a way to navigate acoustic space rather than plastic. Simply close your eyes and wait to hear the shape compose itself, a reflection of the musicality inherent in these machines.