In Reply to: "Perfect copy." Hmm... posted by clarkjohnsen on May 17, 2005 at 08:01:38:
Yes but the point is if they were still being used as CDs in a transport where the timing is derived from the transport then they were likely not the same in terms of being played (the data may be the same but the conditions of data retreival are not necessarily. The exact locations of the pits could have an effect on the timing and the power supply drain patetrn because of servo corrections needed to track each disc).Back to the WAV files (which are bit perfect identical). Their timing is based SOLELY on the knowledge that the samples were taken at 44.1 KHz, the timing has absolutely nothing to do with the _medium_ other than being specified in the data header. You CANNOT get consistently different results in this case that favour either file while it is still in the realm of logical explanation that two bit perfect CDs can sound different because the act of reading them affects their playback because of timing differences, tracking difference, power supply modulation based on these, and even magnetic field particles on the discs inducing current into the surrounding electronics. So two bit perfect CDs are not necessarily identical in all respects that count for CD playback, but two WAV files can be.
The difference is two bit perfect copies of a file are the same file, but two bit perfect copies of the same CD are not necessarily the same CD depending on how you play it back. If you use the two CDs soley to make two bit perfect files then for that purpose they are the same CD.
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Follow Ups
- Re: "Perfect copy." Hmm... - macaque 08:22:58 05/17/05 (1)
- I believe you, and not Mr. Austin, are correct. However... - clarkjohnsen 11:56:13 05/17/05 (0)