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Re: Homemade parabola

Subject: Re: Homemade parabola
From: Walter Knapp <>
Date: Thu, 01 Apr 2004 23:12:07 -0500
From: "Barb Beck" <>
>
> I am the one who suggested he look into a parabola.  He is going to be
> trying to record in extremely noisy environments - compressor stations an=
d
> you really do not want to know how awful they are. I have one on a BBS ro=
ute
> and literally it bothers my detection of birds from several stops away an=
d
> at the stop which is about 300 feet from the thing there is no hope heari=
ng
> anything.
>
> He is going to have a heck of a time cleaning up what he gets well enough=
 to
> analyze the song reasonably - at least it looks that way from my point of
> view.  If the parabola can cut down a little on the noise AND focus the
> sound somewhat to bring in some amplification it will be a big plus.

I certainly agree, under such conditions a parabola will get a recording
to use. I've done lots of that with my frog survey work. A shotgun won't
be near as good.

I also agree it's going to be hard to do really precise analysis. Though
a sonogram may still show everything pretty clearly.

Walt




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