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Digital Needle: Ripping vinyl records with a scanner (2013)

cs.huji.ac.il

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Re: Digital Needle: Ripping vinyl records with a scanner (2013)

#101

Post by Spare_account »

eigenhombre wrote: post #74

Carl Haber, a guy I worked with at LBNL[1] about twenty years ago pioneered this technique, at least as far as I know. The really cool thing about it is how it can be used to play very fragile recordings without damaging them. "The method has been used to successfully play several recordings for the first time, including an 1860 phonautogram, the oldest known sound recording of a human voice, and the only known recor…

FWIW this content is approximately 19 years old (the date in the title is incorrect). Wayback machine has archived content going back to 2002ish.

https://news.ycombinator.com/item?id=26959024

Re: Digital Needle: Ripping vinyl records with a scanner (2013)

#103

Post by ChrisArchitect »

Internet Archive just posted a thing a few days ago about their process for digitizing records. Is that why you dug this up?

https://twitter.com/internetarchive/status/13864235128107212...

And here's all the discussion from a day ago:

https://news.ycombinator.com/item?id=26942509

Re: Digital Needle: Ripping vinyl records with a scanner (2013)

#104

Post by jakecopp »

radomir_cernoch wrote: post #32
MrsPeaches wrote: post #11

Earlier quoted context omitted.

For anyone else who was intrigued by this, I found this helpful animation: https://www.vinylrecorder.com/stereo.html

Wow, the best example of teaching minimalism I know. Even though the website fails on so many levels, ;-) I still get the message in 15 seconds.

It reminds my of the Hyperphysics [1] website, which I believe borrows from Apple's Hypercard (pre World World Web) information tech!

[1]: http://hyperphysics.phy-astr.gsu.edu/hbase/hframe.html

Re: Digital Needle: Ripping vinyl records with a scanner (2013)

#105

Post by kurthr »

ByThyGrace wrote: post #87
kurthr wrote: post #63

Earlier quoted context omitted.

You're joking, but based on the dynamic range (claimed by audiophiles) over a min length of ~160um (more on the outside less interior for 2kHz tone) and the peak motion ~37um per channel. PVC grains are typically 100s of um in size, but the monomers themselves are ~10nm. Note that with 120dB claimed dynamic range this would be 37nm of deflection (at 45deg or 25nm lateral) for full resolution. That is close (3x off) t…

Thanks for the informative explanation! If say an 12-inch LP is scanned at 250nm optical resolution, what output digital image resolution are we talking here (in pixels)?

It would be truly terrifying resolution. Just a 4"x4" area at 10um resolution would be 10k resolution.

Here's a good place to look for vinyl LP info:

http://www.gzvinyl.com/About-vinyl.aspx

Re: Digital Needle: Ripping vinyl records with a scanner (2013)

#106

Post by doggodaddo78 »

ndeast wrote: post #26
doggodaddo78 wrote: post #24

Random Q: do I have a damaged/bent stylus if a certain record (Toots and the Maytals' Pressure Drop picture disc) goes silent at several different times? I checked the stylus force scale at the different test points, and it's right in the middle of the cartridge specs. Every other record plays fine, except some new records play slow and/or some carve out a thin hair of lacquer/enamel the first time. This always makes…

If it is just happening with a specific record (especially a picture disc) it's likely not your stylus and just the pressing. You can give cleaning your record and stylus a shot and see if that helps. If records are playing slow make sure if your table is belt driven your belts are still in good condition. Also make sure your tonearm height and anti-skate are properly adjusted. Cleaning your records before you play t…

It's a direct-drive Panasonic PL-5 with the internal calibration strobe, so no belt.

I always clean them with a Zerostat and Discwasher. And have a Japanese stylus cleaner too (the stuff that looks like a breast implant for mice porn stars.)

The local record store has the same record, maybe they'd compare them?

Re: Digital Needle: Ripping vinyl records with a scanner (2013)

#107

Post by Koshkin »

wwn_se wrote: post #88
Koshkin wrote: post #52

Now I'm dreaming about a program that would simply play a high-res photograph (scan) of a vinyl disk... This also reminds me of the idea to use paper for archival. This is based on two factors: that modern office paper is extremely durable (and is likely to outlast most of the other physical media out there), and that scanners are (and have been for years now) extremely high-resolution; so, you can simply print the b…

Interesting concept the biggest problem would probably be data density. Like how many papers would you need to to get about dvd size. Other than than the problems in getting a reader dvds is one of the best current long time solution.

With, say, 1200 dots per inch it would be nothing to sneeze at...
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