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Producing clear sonograms

Subject: Producing clear sonograms
From: "Birding Africa (Callan Cohen)" cal=
lancohen
Date: Thu Jun 15, 2006 8:25 am (PDT)

Dear Nature-recordists,

I'm struggling to find software that will produce a clear sonogram for
analysis and presenting bird calls. I appreciate that the clarity of the
sonogram is affected by the quality of the recording, but it seems that eve=
n
with very clear recordings, it is not so easy to produce a clear sonograms
without excessive "noise"?

Are Kay Sono-graph sonograms (from a prohibitively expensive machine) that
one sees in publications artificially clean?

Which programs can one use to get clear sonograms? I've tried Raven and
syrinx-pc but I can't seem to get them even vaguely clear.

Any advice?

Many thanks,
Callan

Callan Cohen                         Percy FitzPatrick Institute
        of African Ornithology,
Mobile: +27 83 256 0491       University of Cape Town,
Tel/fax: +27 21 685 4081                        South Africa.
Skype: callancohen

BIRDING AFRICA www.birdingafrica.com
CAPE TOWN PELAGICS www.capetownpelagics.com







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