In Reply to: Technical question about vinyl posted by mike_decock on November 18, 2002 at 14:58:41:
Ok, I remember reading the *real* spec. somewhere but have forgotten it now. No matter, I will try to calculate it:If they use electrodeposition to produce the stampers for the 'pits' on the die, then typically the dimensional accuracy for the smallest feature that can be produced is ~0.5 microns (0.5 x 10^-6 m)
Vinyl travels at speeds across the stylus at roughly: 1.6 cm/s to 0.8cm/s (at start & end) - or 0.016 - 0.008 m/s
Thus, the sample rate is approx:
0.016 / 0.5 x 10^-6 per second = 32 kHz at start
and 16 kHz at the end.
(that's for EACH channel of stereo)Happy listening...
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Follow Ups
- rough calculation... - chillysalsa 11/18/0218:01:03 11/18/02 (17)
- Re: rough calculation... - John Escallier 14:30:56 11/19/02 (12)
- stamping process - chillysalsa 09:40:56 11/20/02 (11)
- Re: stamping process - John Escallier 10:04:08 11/20/02 (10)
- You CAN open 2 explorers. Why not? - orejones 11:37:26 11/21/02 (2)
- You can also... - bhjazz 13:02:19 12/7/02 (0)
- Son of a gun, it worked. - John Escallier 11:45:38 11/21/02 (0)
- Download the latest version of Netscape :-) - Penguin 10:40:14 11/20/02 (5)
- Netscape is okay, but... - bhjazz 13:04:20 12/7/02 (0)
- That's just vat dey'd expect me to do. - John Escallier 10:58:22 11/20/02 (3)
- Get one of these for home - Penguin 12:14:25 11/20/02 (2)
- Gonna order it before end of day - John Escallier 12:45:46 11/20/02 (1)
- They are very secure (nt) - Penguin 19:54:47 11/20/02 (0)
- Google, of course - John Escallier 10:10:44 11/20/02 (0)
- That's the sort of calculation I would have thought about… - David Aiken 00:17:57 11/19/02 (2)
- But now that I've thought further… - David Aiken 12:09:40 11/19/02 (1)
- It seems comparison is like round peg in square hole - chillysalsa 13:13:39 11/19/02 (0)
- Thanks (nt) - mike_decock 19:44:51 11/18/02 (0)