DESIGN NAME: 3D Printed Record
PRIMARY FUNCTION: Audio Recording
INSPIRATION: The main motivation for this project was to push the limits of modern 3D printers. With recent materials advancements and desktop machines getting cheaper and more functional, we are still only beginning to realize how rapid prototyping will change the way we design, consume, and innovate. 3D printed records serve as a demonstration of the current state of the technology and stimulate discussion about the broader implications that 3D printing has for the future of personal fabrication.
UNIQUE PROPERTIES / PROJECT DESCRIPTION: Ghassaei created a technique for converting digital audio recordings into 3D-printable, 33rpm records that play on ordinary turntables. Though the resulting audio quality is low, the songs encoded on these records are still easily recognizable. The 3D modeling required for this project was too complex to do by hand, so she wrote a computer program to generate the 3D models algorithmically, using raw audio data as an input.
OPERATION / FLOW / INTERACTION: These records play on an ordinary turntable, with standard needles and amplification equipment.
This project is freely available, open source, and accompanied by source code and documentation on Github and Instructables:
github.com/amandaghassaei/3DPrintedRecor
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instructables.com/id/3D-Printed-Record/
PROJECT DURATION AND LOCATION: This project started in August of 2012 and completed in December of 2012 in San Francisco though further work refining this process and adapting it to other digital fabrication processes (eg laser cutting, cnc milling) is still ongoing. It was exhibited in Austin, Milan, San Francisco, London, and New York in 2013.
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PRODUCTION / REALIZATION TECHNOLOGY: First, Ghassaei performed a set of test prints containing sine waves of various frequencies to characterize the frequency response of the printing process. She calculated a Nyquist frequency of 6 kHz, and preprocessed the input audio to remove all >6 kHz components and counteract the mid/high frequency attenuation of the printing process. 3D models of the records were generated algorithmically from this preprocessed audio data and printed on a UV-cured resin 3D printer to micron precision.
SPECIFICATIONS / TECHNICAL PROPERTIES: product dimensions: 30cm diameter x 15mm / audio quality: 11 kHz sampling rate and 5-6 bit depth / playing time: 5-6 minutes per side / printer: Objet Connex500 / printing specifications: 600dpi x resolution, 300dpi y resolution, 16 micron z steps / print time: 1 hour / input audio format: .wav / output mesh format: .stl / output mesh size: approx 50,000,000 vertices
TAGS: record, audio, lp, vinyl, 3d printed, turntable
RESEARCH ABSTRACT: Much in the way the personal computer brought about a digital revolution, personal manufacturing promises to give individuals autonomy over the physical objects in their lives. This has implications in commerce, copyright, and global supply chains, to name a few. This work aims to spark conversation around the current state of personal fabrication, and how it could impact our lives in the future.
CHALLENGE: These records were printed on one of the highest resolution, large-format 3D printers available to consumers today. Although the precision of the printer is excellent, its specs fall about two orders of magnitude away from the tolerances found in traditional vinyl cutting techniques. The challenge was to analytically and experimentally determine the correct groove design that maximizes signal to noise and fabricate playable records using machines that are not optimized for this purpose.
ADDED DATE: 2018-09-15 02:06:34
TEAM MEMBERS (1) :
IMAGE CREDITS: Amanda Ghassaei
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