Originally Posted by drarthurwells:
Chaos theory at work. An extremely small (or minor) event can have catastrophic effects down the chain-of-causality road - a very small amount of jitter can go a long way in later effects on the sound.
[size=x-small]ezkcdude: Don't try to Jeff Goldblum me, buddy! I know what chaos theory is, and it doesn't say anything about jitter. This is a fancy marketing technique that is used all the time in audio. Tell me, how exactly does chaos theory govern jitter? I'd really like to know[/size].
Art: If you knew anything at all about Chaos theory you would know it is about events in general and is not restricted to a particular event. So it can apply to the case where any slight change can eventuate in large scale changes. Jitter is slight change that can lead to problems in sound quality at a large level of change.
Art: Repeated trials over many days of listening to more-jittered and less-jittered music will eventually bring this initial vague peception into full focus as we later realize the jittered music is really bad. Human perception can be very unreliable - any listening tests that don't allow much listening experience to both A (very slightly more jitter) and B (very slightly less jitter) may not show discrimination abilities between the two.
[size=x-small]ezkcdude: Yep, folks, this is another classic argument that shows up again and again. It smacks of truthiness. It seems like it could true, yet somehow, there is absolutely no evidence of this effect[/size].
Art: Twenty five years ago I bought a top Sony ES model CD for my system. A friend, who also had high end equipment, participated in some tests. First I cued up a CD on my Sony CDP with the exact CD being played on a nearby FM classical station, which I had tuned to with my high end FM tuner. I blindfolded my friend who tried to pick the better CDP sound from the same CD on FM, as I switched back and forth at the same volume.
He could not tell which was which in AB testing. Then I did the same with a tape made of a CD with the same CD being played in synch on the CDP I used to make the tape with. Again he could not reliably tell which was which in AB switching.
Then he listended repeatedly to a short passage from the CDP. He knew it was the CDP. Then we did the same with the tape. Then we repeated this AB where both A and B involved repeated listening to one before switching to the other. This allowed him to learn the sound. He then was able to state that the CDP had the better sound, but more importantly, was now able to reliably tell which of the two was playing while listening to the AB switching blindfolded.
AB only works when both A and B are for extended periods to allow adequate perceptual learning. Eyewitnesses to crime often make the wrong ID of suspects but are 100% accurate if they know the criminal before the crime. A long period of perceptual experience is best for perceptual learning to yield valid perceptual discriminations (visual or auditory).
And BTW, what does it mean when you say I "Jeff Goldblum you"?
Is that something you can tell me in public?