Post by Mike Post by krw Post by Sam Plusnet Post by Chris McMillan Post by steveski Post by Chris McMillan
Roy’s got reservations, and I don’t mean for table No 5 ......
"'Whisky-wow-wow', I breathed; she was dressed as Biffo the Bear.
In that kind of outfit, she could get rolled at night . . .
And I don't mean on a crap table."
What are you on, Steveski?
In my experience, 33 1/3 rpm.
How fast does a CD rotate?
Aprox. 200 - 500 rpm; the system is governed by a constant velocity
algorithm - as the scanning starts near the hub and gradually works
outward, the discs slows in rotation to obtain a constant reading speed.
That's when playing at ×1 speed, of course (which of course is what you
will be playing at for audio playback). The faster players used for
computer data discs go up to 50 or 52× - though when they passed about
10 or 12×, they tended to fixed angular velocity rather than fixed
linear. And I believe the 50-odd limit is determined not by any problem
with going faster with the electronics or mechanics of the drive, but by
the fact that the actual discs would fly apart - shatter - if they went
much faster. (If you think about it, 50 times even 200 RPM is 10,000 -
think of the G forces!)
J. P. Gilliver. UMRA: 1960/<1985 MB++G()AL-IS-Ch++(p)***@T+H+Sh0!:`)DNAf
"This is a one line proof... if we start sufficiently far to the left."
[Cambridge University Math Dept.]