[HN Gopher] Forest Elephants and Infrasound
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       Forest Elephants and Infrasound
        
       Author : logikblok
       Score  : 37 points
       Date   : 2024-01-01 09:05 UTC (2 days ago)
        
 (HTM) web link (www.elephantlisteningproject.org)
 (TXT) w3m dump (www.elephantlisteningproject.org)
        
       | brudgers wrote:
       | I looked at the picture of the elephant and thought infrasound
       | makes sense.
       | 
       | The size of elephant ears would probably work better with longer
       | wavelengths.
        
         | gus_massa wrote:
         | My guess is that the deciding factor is the throat.
         | 
         | Yuo can have tiny ears if it would be better, but you need a
         | throat of the corrrect size for breathing and eating.
        
         | joshuaheard wrote:
         | I think the large ears are for cooling the big bodies.
        
           | neonnoodle wrote:
           | Yeah. Think about wooly mammoths - tiny/no external ears.
        
         | Terr_ wrote:
         | If the longer wavelengths are useful because they aren't
         | impeded by obstacles like masses of forest leaves, then the
         | same properties probably mean ear-flaps aren't really effective
         | to shape/concentrate them either. (Although they could be used
         | as a filter to block out higher frequencies.)
        
       | hcfman wrote:
       | Top quality work! Very interesting read.
       | 
       | The use of microcontrollers in the swift unit suggests that the
       | sound localization is all post processing, is there any value or
       | intentions for real time sound localization?
       | 
       | Clearly that would require much more battery power but I was
       | wondering if it was consider added value to this particular
       | research if that were possible.
        
         | hcfman wrote:
         | And if they do, then I have a project that can help with that
         | :)
         | 
         | Raspberry Pi based ARU that would draw a bunch more power but
         | would be able to perform local real-time elephant sound event
         | detection to use with real time localization.
         | 
         | https://github.com/hcfman/sbts-aru
        
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       (page generated 2024-01-03 23:01 UTC)