So I did some tests this past weekend. The software below is an intriguing idea
but cannot handle large files (confirmed by an email exchange with the
authors), I could only get about 8.5 mins of my 2.2 Mb files into it.
I found the following works best for me: using Audition I adjust the screen to
about a 4min view; then launch spectral view in the violet-yellow colour
spectrum; adjust the y (vertical) axis to about 5Khz at max; grab the x-axis
and move the cursor to the the left of the screen, this starts the scrolling,
the further left the faster the scroll. After some practise I found I could
carefully review a 2.5 hour recording in about 10-12 mins.
This works well for owls where the background is quiet at night, or where your
eye is well attuned to the spectral pattern you are looking for. Would be hard
for more subtle work I think.
Thanks again to those who stimulated my thoughts.
C
--- In Eric Fassbender <> wrote:
>
> Hey Chris,
>
> I thought of somehow using the noise capture/footprint function to detect
> similar sounds and gave that a go in Soundbooth. However, it is aimed at low
> end white noise kind of sounds so didn't pick up the call of a barking owl
> that I marked as 'noise'. The function still tried to remove the ambient
> noise (wind in trees, sound of creek) rather than the owl call. After this
> unsuccessful attempt I thought - surely there must be a software out there
> that can do what you want (highlight a sound and then search for similar
> instances). So I typed 'sound editing find similar sounds how to' into Google
> and this is one of the search results:
>
> http://www.comparisonics.com/CSeditor.html
>
> It seems to be able to find similar sounds in a recording, however, I am on a
> Mac so cannot test it. If you have a Windows machine, maybe give it a try.
>
> One last point on the Spectrograms. You'll likely find that once you know
> what the spectrogram of the owl call looks like (i.e. you need to identify
> one instance) your eyes will be able to easily pick up the pattern in the
> spectrogram.
>
> I'd be interested to hear how you're going and what works and what doesn't
> after a few sessions, so maybe let us know :)
>
> Cheers,
>
> Eric
>
>
>
> On 10/04/2013, at 5:11 AM, chrishails50 <> wrote:
>
> > Dear all,
> >
> > Thanks to Gianni, Anders, John, Caspar, Eric and Peter (sorry if I missed
> > anyone) for your responses. ALL very much appreciated.
> >
> > So there is no missing out the grunt work it seems (am I surprised ?). But
> > amongst all your ideas I found most appealing:
> >
> > 1) using spectral view (duh - should've thought of that)
> > 2) speeding up things (4x) using eyes and ears together
> > 3) sampling
> >
> > For my owls I would try 1) and 2). I think sampling is probably fine for
> > day time regular noises, but for an irregular night-time noise like an owl
> > it may be easy to miss between samples.
> >
> > Several of you use a page skip function which is a great idea - I need to
> > find that on Audition.
> >
> > Many thanks all, your time and experience much appreciated.
> >
> > C
> >
"While a picture is worth a thousand words, a
sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause.
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