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Re: Infrasound microphone

Subject: Re: Infrasound microphone
From: "Eric Benjamin" ericbenjamin2
Date: Tue Jul 27, 2010 12:00 pm ((PDT))
stancourtney  <> wrote:
> I am in need of a good infrasound microphone

How far in to the infrasound do you need to go?  Many good omnidirectional=

microphones have a frequency response which extends well below 20 Hz.  My o=
wn
tests of microphone frequency response usually stop at 10 Hz, but there's n=
o
reason why I can't go lower.

Don't try to make an infrasound recording using either cardioid or Fig8
microphones; despite what some mfgr. web sites show, pretty much all of the=
m
roll off below about 150 Hz or so when used at a distance.

Eric





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