Lou, you wrote,
>I find that my own (intuitive) calibration works fine for my
>own uses - and coordinates well with Dan's rigorous scientific method:
Actually, my method is quasi-scientific; even if the SLM you set the
monitor levels with has up-to-date traceable calibration, the
frequency response of the monitors is unknown (the reason for using
band-limited 200-2K noise), the mics aren't qualified for measurement
purposes, etc. My intention is to achieve something
"good-enough-to-be-scientifically-useful," rather than "rigorous."
If these recordings were to show up in a court case with an air tour
manager or snowmobile renter, I predict their expert would tear them
to shreds. But for park management purposes--the stuff we can do is
heavenly.
There's still plenty of work for the real acoustical pros.
-Dan Dugan
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