Yes, this whole fingerprint thing reminds me of the audiophool with the $10K record player and the
$50 Chinese Wal-Mart CD player claiming LPs "always" sound better and CDs "always" sound "terrible."
For what it's worth, I borrow, play and sometimes make personal-use copies of circulated library
CD's and DVD's all the time. We're talking fingerprints galore and scratches to boot, plus usually
some sort of off-center stick-on library label to potentially effect playback mechanics. Never had
a problem, using typical consumer DVD players and Plextor drives in the computer. I had a DVD last
week ("Battle of Algiers" -- superb movie, highly recommended, DVD reissue is excellent) that had a
pinhole chunk chipped out of the edge. It played perfectly -- I tested every bit of the DVD because
I was curious if there was a data problem from the chunk. It was all scratched up too.
-- Tom Fine
----- Original Message -----
From: "Jerome Hartke" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Sunday, July 02, 2006 7:25 PM
Subject: Re: [ARSCLIST] Longevity
> Moving away from opinions, our testing laboratory has conducted tests on
> both CD and DVD discs containing such defects, both of our own fabrication
> and obtained from Philips Laboratories. Results are as described in my
> initial contribution.
> Simple fingerprints should never interfere with playback unless the read
> drive is of very poor quality. The real risk of fingerprints is in the oils
> from the body. Those of each person are distinct, and some can degrade discs
> over an extended period of time.
> Media Sciences, Inc.
>> -----Original Message-----
>> From: Association for Recorded Sound Discussion List
>> [mailto:[log in to unmask]] On Behalf Of Alex Hartov
>> Sent: Sunday, July 02, 2006 5:58 PM
>> To: [log in to unmask]
>> Subject: Re: [ARSCLIST] Longevity
>> That is part of the hype. You try it. I know from experience that a
>> simple finger print will mess up playback on either CD or DVD. I
>> don't know where the notion of a whole in the CD/DVD being
>> recoverable comes from but it's definitely nonsense.
>> On Jul 2, 2006, at 5:31 PM, phillip holmes wrote:
>> >> CD and DVD error detection and correction algorithms will "play"
>> >> discs with
>> >> 2 mm diameter holes. Some DVD systems require a 6 mm defect before
>> >> data loss
>> >> occurs, and the problem is then loss of servo lock by the read
>> >> drive. Can
>> >> 78s do this?