On Sat, Apr 24, 2010 at 03:52:16PM -0700, Ken Restivo wrote: > Makes sense: at slower speeds, the laser could burn a hole > in the media. So at slowest possible speed, I should get > the deepest possible pits, and thus the most reliable-to-read CD, > I guess. No that's not how it works. Simplifying things as bit, on a real 'stamped' CD the pits should be 1/4 wavelength deep, so that the reflection of the bottom is in antiphase with the one from the surface, this provides the best 'contrast'. Writeable CDs don't have pits, either the color or the reflectivity of the surface is modified by heating it. Both require the laser power to be controlled in function of write speed. So the slowest allowed speed is not necessarily the best one. Ciao, -- FA O tu, che porte, correndo si ? E guerra e morte ! _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
