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Re: Interesting Koala sounds

Subject: Re: Interesting Koala sounds
From: madl74
Date: Tue Dec 3, 2013 4:44 am ((PST))

I listened to this and it simply doesn't have low frequency components. It 
is a bit of sloppy journalism using terminology they don't understand. The 
low frequency is a croaking, not a vocal chord vocalisation. This is obvious 
after a LPF is applied. What we hear is a modulation, not a low frequency 
sound. A Koala croak is no more unusual than a frog croak. 

It is unusual and interesting sound but it is far from a "a low, rumbling 
bellow" as described. 

While I'm having a gripe, the BBC dub an artificial rumbling sound on every 
shot of elephants. These animal use infrasound to communicate over long 
distances but, by definition, this is inaudible. Besides they have no clue 
as to whether each and every elephant is constantly emitting infrasound 
calls as represented on TV. There even appears to be a standard BBC 
concocted elephant rumble which is used every time. 

David Brinicombe 

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