Hi Christine,
A simple extended frequency microphone can be made us=
ing two omni directional capsules. Heres a sample sonogram from a recording=
I made using the Korg MR1 at 192 Khz. The noise is evident from its conver=
ter.
http://urlme.net/audio/pipmicshybrid.jpg
The sonogram shows a hedge been shaken at the start, followed by a key jing=
le, and the ultrasonic pips from a dog deterrent device, ending with a key =
jingle test at distance.
All highly scientific methods.
Im not sure about the MR1's ability above 50Khz, it shows some response but=
that maybe due to distortion.
Ive not heard any samples from the Korg MR2 to judge if its similar to the =
MR1.
Ive also mailed you off list in my role as a microphone philanthropist, and=
also mentioned a polymer cylinder microphone has improved response at high=
frequencies than this hybrid concoction of omni capsules.
Kind Regards,
-Mike.
--- In "Christine Hass" <> wro=
te:
>
> Hi,
>
> I'm a biologist interested in obtaining sound recordings of a social
> carnivore, the white-nosed coati. These raccoon relatives live in the
> tropical and subtropical forested regions, and live in family groups of u=
p
> to 40 (or more) animals. The are quite vocal, and emit a variety of grun=
ts,
> chirps, and squeals. Very little analysis has been done on their
> vocalizations, and all of that in zoos where they don't vocalize much. W=
hat
> has been discovered is that their vocalizations range from 5 kHz to 55 kH=
z,
> posing difficulties for field recording.
>
> I'm new to sound recording, but have been trying to figure out the best (=
and
> most affordable) way to record and analyze these sounds. I need lightwei=
ght
> but durable equipment, as I may have to hike in long distances to get to =
the
> groups. I spent some time perusing the old messages on this listserv, wh=
ich
> was very helpful. It sounds like I might be able to get away with a
> recorder such as the Korg MR-2 or Tascam DR-680. The messages regarding =
the
> higher range recordings from the "standard" mics, such as the Sennheiser
> MKH20 were particularly interesting, as I thought I might have to hunt do=
wn
> a wideband mic to cover 1-100 kHz. But I don't want to plop down > $1000
> for a mic to discover it didn't quite cover the range I need. This is a=
ll
> for analytic purposes, not for producing professional sound recordings, i=
f
> that makes any difference.
>
> I'm looking for suggestions, primarily for mics that will cover the
> necessary range and still be affordable (under $2k, preferable under $1k)=
,
> but I also welcome any other suggestions regarding equipment and techniqu=
es.
>
> Thanks,
>
>
> Chris
> Vail, AZ
>
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