Dear Bruce,
Thanks for all your replies on this interesting topic.
Just so I have understood this correctly. A mathematically well designed l=
arge (your largest sized dish I mean) parabolic dish with an appropriate mi=
c correctly positioned that has a frequency response starting at say 30hz, =
will still record low frequency sounds eg the growls of a Gutteral Toad htt=
ps://soundcloud.com/bwanakomba-1/bbc-outlook-cut https://soundcloud.com/bwa=
nakomba-1/bbc-outlook-cut which start at 370Hz or other even lower sounds,=
will deliver no effective gain until you reach @1khz. Therefore one can s=
till record animals with low frequency calls its just that you won't get th=
e gain. So if the call has a range of 350Hz - 2.5Khz will the recording be =
very distorted and require alot of EQ due to variable gain curve, to make a=
n accurate reproduction? Is this where your booster disks come in, to prev=
ent the so called ' bass dip' and accommodate these frequencies into the re=
cording without distortion. Further if low frequencies enter from all angl=
es how acoustically tra
nsparent is the material to allow them in.
I really liked your Indian leopard recording and wondered what the sonogr=
amme looked like or https://soundcloud.com/wildtronics-llc/stereo-leopard-1=
-india https://soundcloud.com/wildtronics-llc/stereo-leopard-1-india and wh=
at the frequency range recorded was.
Cheers
Andrew
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