Re: estimating direction and distance of gibbon calls

["werainey" werainey]

The (expensive) commercial hardware sold for localizing gunshots (and other=
 impulse noises)
is along those lines, but 2D (Google Shotspotter for one source). These use=
 networked arrays
of acoustic monitors on telephone poles, etc.  distributed over parts of ci=
ties. Each monitor
has small planar array of microphones. Their product has its  origin  in  w=
ork by USGS
seismology staff (Menlo Park CA).

Bill R.

> just a thought experiment. has anybody tried a point source tetrahedra (l=
ike the soundfield
microphones). you will get no distance information (though you sense it whe=
n listening) but
you get accurate 3d localisation. may be even a combination; the larger tet=
rahedra providing
distance information (i do not think=A0it will be accurate for direction) a=
nd the small one for
direction.
>
> umashankar