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Two Dimensional Frog Surveys

Subject: Two Dimensional Frog Surveys
From: "bbystrek" <>
Date: Sun, 25 Aug 2002 18:40:41 -0000
Hello,

In regards to frog survey work...

Are there acoustic techniques which would allow one to map locations 
of calling individuals within a given environment?  Say with an array 
of microphones elevated to give some geometric perspective above the 
breeding area.  It sure would be interesting to graphically be able 
to see the group dynamics over a period of time, even days.  
Individuals and species could probably be easily identified if the 
spectral content could be represented.  You would think some of the 
experience gained from marine electronics could yield sort of "frog 
finder".  All of the DSP (digital signal processing) integrated 
circuits on the market today sure do make for a lot of possibilities 
for sound processing applications.

Any comments?  Does this technology already exist?

Brian Bystrek





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