Peter, Andrew,
I have recently been playing about recording old vinyl LPs to CD, and have
some limited experience in noise reduction. I applied the same techniques to
the mystery bird recording and got rid of a lot of the noise. The settings I
used were much too strong for music but seem to have worked here. I had to
convert the result to a small video file with no picture, just sound, to
share it here.
http://picasaweb.google.com.au/lh/photo/-xY41SL0Hm7flcXRUGn53g?authkey=-rVnpRPdbnI
There is a 1 second silence lead-in at the start of the file. You can
clearly hear what I presume is the call in question at the following times
from the start of the file. 3, 5.2, 7.5, 10.3, 12.4 and 15 seconds. There
are also some Australian Magpies near the beginning and a deeper dove-like
call. This was more noticeable in the original, at least to my 66 year old
ears.
I don't profess to be an expert, but it does not sound like any of the Koel
calls, male or female, that I hear daily here in southern Sydney.
Regards
Roger Giller
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