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I've seen this done for vinyl discs. You play several copies of the same old disc. The noise defects appear in different places, and can be easily removed by
by enriquto 3y ago
I've seen this done for vinyl discs. You play several copies of the same old disc. The noise defects appear in different places, and can be easily removed by merging the aligned the tracks. Even with just two discs, the output result is spectacular.
- Solvency 3y agoWhat software?
- enriquto 3y agoIt was a project by some signal processing students in my lab. As far as I know, they didn't get to publish anything besides writing a technical report; and the code was a matlab thing that just ran on the computer of one of them... But their presentation was excellent! They brought their vinyls, the turntable, and did a live demo of the whole thing running.
- Solvency 3y agoWeird, why not sell it, or at least open source it? I imagine thousands of people would use it.
- enriquto 3y agoI don't know, releasing a sellable product from an algorithm is a huge undertaking, probably harder and definitely less interesting than developing the algorithm itself. This was just a three-month work project by some smart students, who afterwards got lucrative jobs working in industry. In more practical terms, people who actually listen to vinyls get to appreciate the "cracks", and they wouldn't really see the point in such a product. Major studios have surely developed similar tools internally. The method is probably a scientific curiosity, mostly of educative interest, like observing the helium in the sun atmosphere with a hand-made spectometer built with an old CD and a cereal box.