"… as shown by a recent project from Instructables employee Amanda Ghassaei, 3-D printing may not only be useful for bringing new objects to life. Her 3-D-printed records show the technology’s potential for revitalizing forgotten objects and products that companies have long left behind. On Instructables, Ghassaei posted an in-depth breakdown of how she turned digital audio files into real, 33 rpm records, playable on standard turntables. Using the open-source language Processing, she created an algorithm that analyzes a given audio file and translates it into the groove, of varying depth, to be printed on the record. "This way," she explains, "when a turntable stylus moves along the groove it will move vertically in the same path as the original waveform and recreate the original audio signal." The audio from the resulting piece of printed media isn’t pristine by any means—the tracks by New Order and Nirvana sound like they’re being intercepted fleetingly from some underpowered college radio station a few cities away—but as a proof of concept, they’re undeniably interesting. Ghassaei made her records with Objet Connex500, which offers some of the highest resolution 3-D printing available, and in all, she says, each record used around $200 to $300 of resin. So, sorry, you probably won’t be using your MakerBot to fill out your Sarah Records collection anytime soon."
(via Listen To The First 3-D-Printed Records Ever Made | Co.Design: business innovation design)