Dear Bioacoustics List,
Recent work with a wavelet-based 'click detector' has advanced
considerably-- so much so that the results can now be shared with the
general public.
http://tinyurl.com/23slg8q
These are detection spreadsheets that would be useful for anyone
studying the sounds of Beaked whales -- and proficient with
spreadsheet software, of course. As mentioned in an earlier post,
'echo flag' seems to be capable of marking whether a particular event
is the original sound (values below approximately '1'), or a
reflection (higher than '1').
If you are interested in snapshots of the detections themselves,
images of the amplitude waveforms can be found in the associated
'_jpegs' files [ compressed tar format ].
This project is starting with a couple of nice recordings of
Blainville's Beaked whale, /Mesoplodon densirostris/, made in the
Canary Isles and available on http://mobysound.org/.
I am actively seeking other recordings for consideration. Minimum
requirements at this time are 192000 samples per second and 16-bits
per sample.
Questions, comments, suggestions for additional fields in the
spreadsheets are encouraged.
Sincerely,
Mark Fischer
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http://aguasonic.com/
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