Doing bat detection

Thread Starter

saharsahar

Joined Aug 16, 2010
28
now my job is to develop an algorithm for bat call species identification. Does anybody know if I have to write the species with the features in a seperate database like SQR or in the matlab ?does anybody have any experince for the bat call identification please?
 

rogs

Joined Aug 28, 2009
279
There's a collection of time expanded bat recordings here: http://www.avisoft.com/sounds.htm#bats
which may help.
There's quite a lot of useful information about 'serious' bat detecting in general, on this site: http://www.avisoft.com/

As I'm sure you're already discovering, there's quite difference between the frequency division/ heterodyne detectors, and the full scientific work being done with time expansion detectors.
Unfortunately, there's also a dramatic difference in the cost of equipment as well!! :)
 

Thread Starter

saharsahar

Joined Aug 16, 2010
28
Rogs, I need the bat calls in wav format to save. the website you mentiones does not offered them .
In addition, I have no problem with equipment as I give up the idea to build my own and I 'm going to buy a full spectrum bat detector . the problem now is how I find the bat calls in wav format (including Indiana bat call) and how use this database. I mean I write them in the sql or matlab ?
any idea is highly appereciated.
 

Thread Starter

saharsahar

Joined Aug 16, 2010
28
Hi, Thanks Rogs.
after a long time finally I got my softwares from Binary acoustic technology (Spect'R and Scan'R) and also sonobat. I have a problem using the sonograms. I downloaded several bat calls in .wave format from different resources. However, I don't know why some of the calls are shown as the sonogram in Scan'R and some of the are not( or sometimes with a strange shape)? does anbody have works with Scan'R before ?
as the second question, since I'm an electrical enginner and not an ecologist , I can not understand exactly what does the bat call's sonograms mean . because there are differenet curves in the songrams and some time several over each other in vertical axes, can anybody direct me exactly which of the curves I have to make attention to extract the features?and what is the difference between the curves in the sonograms? are they for a sequence or just one click?
any comment, idea and thoughts is really appreciated.
Sahar
 

Thread Starter

saharsahar

Joined Aug 16, 2010
28
In addistion to previous questions, I have another question; what does the red, yellow and blue colors mean in a bat call spectogram? Thanks so much
sahar
 
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