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How about a download system to a 3-D printer to create vinyl records? Perhaps a new audio twist and distribution system? Let's get bizzy on those patents.
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The signals that are way down in level on a vinyl record are so small, they approach the wavelengths of light.
The highest resolution 3-D printer I am aware of has a minimum feature resolution of 0.1 mm or so. We could be generous and say that a super-duper pro grade 3-D printer might be able someday to reach 0.01 mm feature resolution. Still way off of -60 or 70 dB signal levels on a vinyl record groove. The 0.1 mm might represent something like -10 to -12 dB level in a groove, if even that low, or the equivalent of a broken Sound Blaster sound card operating at only 2-3 bits of resolution.
The signal levels and their physical size in the groove were discussed in the following articles:
Popular Electronics, Nov. 1980 issue, "Phonograph Playback: It's better than you think!" By Dr. Bruce Maier and Jon Risch
Audio magazine, March 1981, page 21, "More Than One
VTA", again by Dr. Maier and myself.
Jon Risch
I wonder if a image or other copy of the 1980 article available?
It sounds very dubious, there are images in fine detail of groove walls.
This is small but nowhere near approach the wavelengths of light, which is proton photography really.
Some piece of debris is like a little flake of wood or whatever, very tiny but not that small?
Whatever the size of current automotive microfibre clothe that seems to effectivel scrub out LP grooves, probably dozens of fibers in a groove?
Never trust an Atom, they Make Up everything!
There does not appear to be any copies of the three article's from that era on-line in electronic form.
I have copies of at least two of them, but would first have to find them!
RE seeing fine detail in a record groove, it is kind of like looking at an oscilloscope waveform: stuff that is just barely visible in a photo is only about -36 to -40 dB down from maximum recorded levels.
Maximum recorded levels on vinyl records commonly were at +10 dB to +15 dB, with some reaching slightly higher.
Jon Risch
I'm not sure the technology is ready yet. How would you get the pops and crackles to be printed reliably?
:)
...EZ. There are already a number of plugins for sound editors that synthesize those very effects. Just choose a favorite and add the effects to the "file" before printing.
you may need to start with kids size 45's and work your way up.
"Once this was all Black Plasma and Imagination" - Michael McClure
An Engineering student from the University of Michigan just created a functioning arm for a little boy who was born with one arm. Just saw it on the morning news.
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