[Arny Krueger]

"Audio Empire" wrote in message
...
On Tue, 28 Aug 2012 16:01:00 -0700, Arny Krueger wrote
(in article ):

"Audio Empire" wrote in message
...

Well, thank you for that exacting primer on how tweeters work. It was
very
informative. But it would have served this discussion better to explain
to
us
what the mechanism is that keeps even the finest speakers from being
able
to
convincingly reproduce trumpets and some other instruments.

Short answer - there are two rooms are involved and they create the
sticking
point.

When you reproduce a recording of a horn or other musical instrument, you
don't reproduce the horn, you try to reproduce it and its effects of the
room it is in.

The exception would be a recording of a horn that was made in an anechoic
chamber, the recording then played in an anechoic chamber. Those can be
made
to work fairly well and realistically, but of course nobody is interested
in
that.

The horn does not just create a sound vector (intensity versus time) but
instead it creates a sound field (which may be represented by an
infinitude
of vectors).

The speaker does not create just the sound of the horn, but it stimulates
the room to make a bunch of other sounds. So there are infinity times
infinity other variables, and fools that we are, we try to send them from
place to place using a small number of signals.

Sorry, I don't buy that.

Doesn't matter.


Were that the case, one would think that at least
some rooms would make these instruments sound more realistic than in
others.

They do exist, it is just that they are outside of your personal experience.

Sometimes trumpets are close-miked in a studio and room interaction on the
capture side is nil.

If you believe that you can close-mic trumpets so that there is no audible
influence from the room, then that again says something about what is inside
and outside of your personal experience. It also suggests some lack of
knowlege of mic pickup patterns.

They still don't sound like live trumpets.

But depending on the room in which the recording is made, how the recording
is made, the room the recording is played back in, and the type and
orientation of the speakers, the degree of liveness can vary over a
tremendous range.

But live trumpets sound like live trumpets in any venue, any room, even
outdoors.

But the same trumpets don't sound the same in every real world context.