Re: strange sintony between bird and frog

["Avocet" madl74]

Jos=E9,

Had to have a go at this one. It was recorded M-S converted to L-R.
The S signal was too low and I enhanced it 30dB, bringing up plenty of
mp3 artifacts. You did not mark if up on Soundcloud for downloading so
I had to re-record it.

Anyway, the bird and frog were clearly separated on the enhanced
stereo and the frog was responding to the bird call. Although frog
croaks sound to us like a low frequency sound, it is actually bursts
of 5KHz if you look at the waveform. This is the same frequency as the
bird call, and the frog (of little brain) was simply responding to the
bird as if it was a possible mate. :-)

David

David Brinicombe
North Devon, UK
Cogito cogito ergo cogito sum - Ambrose Bierce