years ago in studio sound, they ran a comparison of
various PZM (or boundary layer) microphones.
i prefer the word boundary layer.
anyway, one point made in that review was that at the
boundary layer, it should not matter which way the
mike points - towards the surface, just a tenth of an
inch or so away )aka pzm) or mounted flush, facing
out.
i start builing my mikes with the capsule flush
because it was a lot easier.
and then i started mounting several on the same plate
(i tried 11 capsules once, but now build with only
five) and the found the beam narrowed, from 180
degrees to about 30 - 60 degrees at mid to high
frequencies.
i have then mounted this plate facing into a parabolic
reflector of about a foot in diameter.
umashankar
__________________________________
Do you Yahoo!?
Get better spam protection with Yahoo! Mail.
http://antispam.yahoo.com/tools
________________________________________________________________________
________________________________________________________________________
|