On Tue, 26 Apr 2005 20:28:01 -0500, Tom Ring
wrote:
Any references on microphone calibration? Maybe a short tutorial? That
is something I have a need to do.

Hi Tom,

Standard microphones (I am being quite specific in terminology here)?

I googled with the terms
B&K microphone reciprocity
and the first hit looks as good as any:
http://www.bksv.com/pdf/Bv0051.pdf
As a treat, it offers a discussion of matching with transmission line
metaphors.

I should point out that reciprocity means exactly that! The
microphone should be capable as acting as a loudspeaker (certainly not
too loud) when driven. Standard microphones are capable of accuracies
in the 1/100ths of a dB (and this is an extremely conservative
statement). If you are playing with retail microphones, and follow
the math, you should be able to cobble up something to the nearest
1/4th dB.

If your application conforms to this discussion, you may visit the
Brüel & Kjær website to find deeper references. They are the
pre-eminent makers of precision sound equipment. As I pointed out in
another posting relating to the poverty of academia on many technical
subjects, the commercial field often leads the way in actual
instruction.

73's
Richard Clark, KB7QHC