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On May 4, 2:50*pm, Sonnova wrote:
On Mon, 4 May 2009 09:57:13 -0700, wrote
(in article ):


On May 4, 11:00*am, wrote:
On May 3, 8:40*pm, Sonnova wrote:
On Sun, 3 May 2009 17:11:39 -0700, wrote
(in article ):

[ extensive quoting snipped -- dsr ]


What exactly are "accurate" speakers? It seems you are building an
argument on a mythological creature that is probably not something
everyone would agree on.

I would think that an accurate loudspeaker would be one which faithfully
reproduces the waveform with which it is fed. The extent to which any
loudspeaker accomplishes that goal is a measure of its accuracy.

A loudspeaker is fed an electrical signal that has only one dimension
in time. You can define any electrical signal in audio by time and
amplitude. When a speaker converts that signal to a sound wave it does
so into a three dimensional sound space. so how does one determine
which speaker has the most "accurate four dimensional wavefrom when
using a two dimensional waveform as a reference?

Sonnova's definition of accuracy is woefully
incomplete, to be sure. That such simple
definitions are inadequate is something that's
been known to acousticians and phyiscists for
a very long time.

Woefully incomplete? You mean that a speaker that reproduces the waveform
that it is fed exactly, without either adding anything or taking anything
away, or changing anything in any way wouldn't be an accurate transducer?

I would assert that it is physically impossible to transcribe an
electrical signal that exists in only two dimensions (time and
amplitude) into an acoustic wave form that exists in the three
dimensional space. It is intrinsically a different wave form because
it has been converted to a totally different form of energy that
exists in an entirely different envirement.


That's like saying that an amplifier that exhibits infinite, absolutely flat
frequency response and zero distortion, IOW, Stewart Hegeman's mythical
"straight wire with gain", wouldn't be an accurate amplifier.

Not at all. the input and output of an amp are essentially the same
sort of thing in nature. They are both electrical signals that can be
described completely by time and amplitude.