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On Tuesday, December 18, 2012 9:35:07 AM UTC-5, Dick Pierce wrote:

Second, there really isn't that much to measure. An audio signal,
like all electrical signals, has only two attributes: amplitude and
frequency.

Actually, to be moe precise, the two fundamental attributes are
ampliude and time,

Granted, but to us non-scientists, it is easier to think in terms of amplitude and frequency, because they correspond to concepts we are readily familiar with (i.e., loudness and pitch).

snip

But NONE of this is a mystery, at least not to those in the signal
processing, acoustical/psychophysical realm.

It may well be a mystery (and often times seems like it is) to those
in high-end audio. But, I'd assert, that's an education problem.

Miseducation is precisely the problem. And the audiophile rags have a lot to answer for on that score.

bob