Oop!
On Mon, 19 Nov 2007 23:35:17 -0500, "soundhaspriority"
wrote:
What puzzled me is Peter's reference to the midrange. In hifi reproduction,
at least, these modes have been traditionally associated with bass problems.
Above some frequency, the modes are more closely spaced than the critical
bands, at which the audible effect becomes questionable. It then becomes a
ray tracing problem. Some early reflections appear to be helpful, as I have
learned with respect to hard flooring around a string. Other early
reflections are very harmful. These are things that experienced recordists
have great knowledge of. I search the web for hints when I encounter a new
situation.
I, as is my wont (how the **** do ya spell that anywho?), expressed
myself poorly - gee, what're the odds? Room modes are a separate
topic, unrelated to your comments about ceiling absorbsion, natch.
You're not going to make me look up the spelling of obsorption are
you? Thanks.
To be slightly on-topic (for me) room modes in small rooms, living
spaces and the like, are (*) in the lower midrange and through
the voice range. The common 8 foot ceiling is as much a fact of life
as death and pussy. No real work-arounds, only accomodations.
Back to off-topic:
(*) What does this mean? That the frequency response at some specific
location is only indirectly related to the frequency response of a
source at another location in the same room.
Strange enough, or maybe not, but there's an exquisite sensitivity in
the difference between the two responses to exact positions in the
room - all well described in the lit, but in terms best described
as poetic. There actually *is* a simple Neutonian mapping, which
completely describes everything observed. It's just very difficult
to translate to the intuitive; very unusual for Newton (encoded
in our DNA!)
It's an ordinary resonant system - rock on the end of a spring kinda
thing - so why can't I generate an intuitive internal model?
Not your problem, of course. Much thanks, as always,
Chris Hornbeck
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