RE: Re: Locating gunshots by sound

["Allen Cobb" <>]

> multipath

Sometimes the earliest arrival is itself also a reflection, so
it's not necessarily the closest. In a flat open area, of
course, this wouldn't be a problem.

Imagine locating gunshots in a city -- all arrivals are
reflections, except in rare cases. And some reflecting surfaces
are more attenuating than others, so you can't use amplitude
either. Some cities are using pole-mounted mics for gunshot
location, and it can get very complicated.

http://www.govtech.net/magazine/channel_story.php/95184

http://www.shotspotter.com/

ac

Allen Cobb



-----Original Message-----
From: 
 Behalf Of Rich Peet
Sent: Friday, January 27, 2006 10:59 PM
To: 
Subject: [Nature Recordists] Re: Locating gunshots by sound


Why is multipath a problem? Don't you just take the earliest
arrival time?




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