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General Asylum General audio topics that don't fit into specific categories. |
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General Asylum General audio topics that don't fit into specific categories. |
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In Reply to: RE: Zerostat posted by PAR on October 15, 2016 at 22:11:46:
"The CD system does not work like that. What does " causing the light to null out" mean?"
Though light acts like a particle sometimes it also acts as a wave. It has a wavelength. When you move the reflective surface ¼ of the wavelength of light the reflection is ½ a wavelength off and it nulls out. Read up on wave theory. This is from the Sony book. I might still have it and could scan it and send you the pictures. This was factory training back when they first came out.
The LASER pickups were slightly changed with the advent of burnable CDs because they use a type of photographic film and the original players could not read them. They were further redesigned when CD-RWs came out because a bunch of them could not read the RWs.
Stamped CDs still have the pits ¼ wavelength of light down for the nulling effect. Burned CDs cannot compete with that contrast ratio. Also, since a burned CD works by photography pretty much you can't leave it out in direct sunlight, this will not bother a stamped CD.
Static electricity will not bother either as far as I know. With vinyl the problem was the mini arcs between the vinyl and the stylus. With a CD the LASER ever gets close enough for that.
Also if you feel like reading maybe you can get a copy of Principles Of Digital Audio, written around the time CDs came out. It says that CDs could easily be four channel, it is just that they never mass produced the media or the players with that feature.
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- RE: Zerostat - JURB 13:47:49 10/16/16 (0)
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