Thanks, this is a good summary of what a lot of us have talked about in the forum before.
TheOctavist;685396 Wrote: > > P.S. - I have no idea why discs are marked as suitable for different > speeds, apart from commerically generated market differentials. It's a > physical process and I can see no reason why a disc should not be > written and read at whatever speed the laser is capable of.. It may > simply be that after manufacture the slightly eccentric ones are sold > as slower - to prevent shaking of your drive in operation!! Which discs are you talking about? Are you talking about writable CD/DVD discs? They come in various speeds due to a couple of factors. The writable layer must be heated by a laser in order to perform the bit flips. Most of the lasers in burners have about the same output power, but can spin at different speeds. The thickness or composition of the burned layer on the disc changes how much energy it takes to flip the bits. Slower means more energy hits the disc as it moves around making it easier to write that bit. There is also the issue of CAV or CLV. CAV (Constant Angular Velocity) means the RPM is the same all the time while writing. CLV (Constant Linear Velocity) means keeping the speed at which the bits are moving by constant. -- SuperQ ------------------------------------------------------------------------ SuperQ's Profile: http://forums.slimdevices.com/member.php?userid=2139 View this thread: http://forums.slimdevices.com/showthread.php?t=93157 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
