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Re: Infrasound microphone

Subject: Re: Infrasound microphone
From: "James Shatto" wwwshadow7
Date: Tue Jul 27, 2010 1:16 pm ((PDT))
It's not just the microphone.=C2=A0 The preamp (gain circuitry) will likely=
 brickwall at certain frequencies.

http://www.sounddevices.com/products/specs/mm1-spec.htm

I have some MM-1's that I use.=C2=A0 The specs say 20Hz - 20kHz, but I reme=
mber reading somewhere that it does go down to 10Hz, but not much if any be=
low that.=C2=A0 These share a similar circuitry to the all the other sound =
devices recorders (and their respective preamps).=C2=A0 Basically even if y=
our mic goes down under, you might be limited by the other parts of the cha=
in.

And then there's the Bass distance fall off that occurs faster than other f=
requencies with distance.=C2=A0 Which is more evident in Omni microphones.=
=C2=A0 Directional mics are a little less noticeable for that, but directio=
nal mics can be a real pain to use outdoors.=C2=A0 At least when conditions=
 are not just right.=C2=A0 And they never are.=C2=A0 Plus a lot of mics int=
entionally subdue the low end because it's generally problematic.=C2=A0 Han=
dling noise, wind noise, electrical hum, and other nasties.=C2=A0 There are=
 some good mics with good low end, but be prepared to baby them to 9th degr=
ee to use them in anything other than a studio setting.

- James


--- On Tue, 7/27/10, Eric Benjamin <> wrote:

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