--- In Wild Sanctuary <>
wrote:
snip
>> of infrasound which we couldn't actually hear but could only feel
> resonating throughout our bodies. I figure it was somewhere around
12
> - 14Hz given the periodicity. It was, as they say in the
vernacular,
> an awesome moment. Seemingly coming from everywhere, >
> Bernie Krause
>
Bernie, There are several arrays around that would have probably
picked up such a sound if you knew the exact time. They are used for
nuclear weapons detection, but also pick up small asteroid
explosions, surf, rock and snow slides, wind noise over the
mountains, etc. See inframatics.org
I hope to have such a microphone sometime but the only ones I have
found are now sold by the U of Alaska and are probably beyond my
financial means. See specs at
www.chaparral.gi.alaska.edu//Model2Senson.html
also www.seismo.berkeley.edu/seismo/annual_report/ar99_00/node11.html
I read some where that these types of "sounds" are on the border
between sound and weather. :-)
Lee Benson, Indianapolis
________________________________________________________________________
________________________________________________________________________
"Microphones are not ears,
Loudspeakers are not birds,
A listening room is not nature."
Klas Strandberg
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