Re: 3032 capsules & bats
"Gianni Pavan" gpavan1960
Sun Jun 15, 2014 2:04 am ((PDT))
next time I'll go there I'll fill my backpack with both high quality
audio and ultrasonic recording gear ! I was fascinated by the "sound" of
the wings !
2014-06-15 1:08 GMT+02:00 [naturerecordists] <
> > About silence, just recently I had a wonderful experience in the
> > tunnels (a 12 km network) of a chalk cave. Absolute silence improved by
> > soft sound absorbing chalk powder and very irregular tunnel surfaces.
> > time I go there with my microphones and recorders for doing some tests.
> > some larger tunnels we found bats colonies, their social calls were
> > fascinating, but the most impressive noise was those of the wings of th=
> > bats flying when disturbed. I did some recording with a phonometer but
> > noise floor was higher than the ambience noise, probably I'd need the
> > microphone to make measures there.
> > Next time I'll go there with my usual microphones and recorders for doi=
> > some recordings.
> This afternoon I was back with the bat roost I have been monitoring with
> cameras and ultrasound for some time. Try to get hold of a cheap
> bat detector to hear all the ultrasounds you are missing. It's a whole ne=
> world of sound.
> These bats are a maternity roost of Lesser Horseshoe bats, and they are
> surprisingly active in the daytime in a dark loft space. More fun will
> later as the youngsters learn to fly.
> It's not just bats that you can hear with a detector, but many insects an=
> small mammals also emit ultrasound.
> David Brinicombe
Centro Interdisciplinare di Bioacustica e Ricerche Ambientali
Universit=C3=A0 degli Studi di Pavia
Via Taramelli 24, 27100 Pavia
The University of NSW School of Computer and Engineering
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