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

Post by tinus_hn » Mon, Apr 26, 2021, 11:18 PM UTC

voldacar wrote: post #9

Scene_Cast2 wrote: post #3

I remember wondering whether a laser "needle" could work. IIRC the format has some funky EQ and other things to make a physical needle work better.

not cheap, but yeah it works great. https://www.elpj.com/ I actually got to hear one once. Extremely neutral and high-res, but the record has to be super clean because with the laser, you will hear every little speck of dust. Also it doesn't work with colored vinyl, iirc. edit: they use 5 different lasers to get the data out of the groove, go read the section on their site, it's actually really intricate and cool > t…

Post by abrookewood » Mon, Apr 26, 2021, 11:30 PM UTC

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…

Post by voldacar » Mon, Apr 26, 2021, 11:49 PM UTC

LeoPanthera wrote: post #55

voldacar wrote: post #9

Earlier quoted context omitted.

not cheap, but yeah it works great. https://www.elpj.com/ I actually got to hear one once. Extremely neutral and high-res, but the record has to be super clean because with the laser, you will hear every little speck of dust. Also it doesn't work with colored vinyl, iirc. edit: they use 5 different lasers to get the data out of the groove, go read the section on their site, it's actually really intricate and cool > t…

> it works great. It does not work great. The problem is dirt, which sounds like a minor issue, but it renders the concept almost completely useless. A stylus pushes dirt out of the groove as the record turns. A laser cannot do so, and it's virtually impossible to fully clean a record. The only remaining advantage is that a laser turntable does not wear out the disc, and it's an incredibly minor advantage, compared t…

Post by magicalhippo » Mon, Apr 26, 2021, 11:58 PM UTC

pezezin wrote: post #68

h2odragon wrote: post #48

Earlier quoted context omitted.

Some humans can hear much higher than 20khz. Very little of our recording and playback equipment does well above that point, however, so efforts to reproduce that part of the spectrum most often fail miserably. CD's are certainly good enough for now.

The only source I could find about humans hearing above 20 kHz is this paper reporting that some people could detect tones up to 28 kHz: https://asa.scitation.org/doi/10.1121/1.2761883 But that is for a pure tone under perfect laboratory conditions. Also, they report that the minimum hearing threshold at those frequencies was above 90 dB. So I don't think any human in this planet can actually hear anything above 20 k…

Post by ngcc_hk » Tue, Apr 27, 2021, 12:40 AM UTC

Fnoord wrote: post #67

radomir_cernoch wrote: post #32

Earlier quoted context omitted.

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.

This website, as well as the one in the thread's URL, are exactly in the way as I learned the WWW was when I first started using it.