In message , Jim Lesurf
writes
In article , Chris Morriss
wrote:
[snip]

With the B&K test mic (4133) that I've used for DECT and GSM handset
measurements, you calibrated the mic by using a reference pressure
generator that the mic plugs into. I think that 0dB Pa is with
reference to an SPL of 0 Pascal at the mic diaphragm.

I think if you look at the Bruel and Kjaer web site they have some info
about reference SPLs.

Good thinking! :-) I do have some B&K mics and calibrators at work.
'Inherited' them along with an anechoic chamber some years ago. Didn't
think to look in the handbooks, but now you've mentioned it, it sounds like
a good idea.

Slainte,

Jim


If you've got a 4133 or 4134 going cheap then here's a buyer :-)
--
Chris Morriss