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From: chung
Date: 6/17/2004 3:29 PM Pacific Standard Time
Message-id:

S888Wheel wrote:

And, too, a measurable difference is not necessarily audible.

Never said it was. However if there is no measurable differences between
two
signals then there is nothing to discuss. They will make the same sound
with
the same associated equipment.

The problem, of course, is that usually there is a measureable
difference between two components, since our measuring instruments are
so sensitive.

It is not a problem for the instances in which there is no measurable
differrence. One saves themselves the rigor of doing any further testing. So it
still makes sense to start there.

Take two cables of the same make, one 3 ft long and one
3.1 ft long. There is a measureable difference. Heck, the lengths are
clearly different. And we can certainly resolve the 0.1 nanosecond or so
in delay.

A delay is not inherently a difference in the signal. Heck you can measure
differnt components days apart and there is a substantial delay but the signal
is what it is each time.

It would take an extreme subjectivist, however, to claim that
there is a sonic difference between those two.

It would take a mistake in one's impression to say there is an audible
difference if the only measurable difference is a nano second delay. Even if
the comparisons are supposed to be syncronized. If they are not syncronized
there is no measurable difference is there since such delays are irrelevent to
the content of the signal.

The crux of the problem is in the disagreement on what differences are
detectible via listening only. Past research indicates that level
differences of less than 0.3 dB over the audio band are not detectible
by listeners. Let's be generous and tighten that to 0.2 dB. If we would
agree that this is the threshold of audibility, then we can prove fairly
easily that 99% of the cables and interconnects do sound the same.

I said never said measurable differences were the end, only the start. If there
is no measurable difference it is the start and end. In some cases some time
and effort can be saved.