That sounds good to me, and not necessarily so hard.
Currently a file is associated with a species name (or several?). It needs =
to also (optionally) be associated with two times and two frequencies, thes=
e being the start and end of the call, and the upper and lower limits of it=
s frequency range (or the loudest parts). Raven Pro does this, I believe, a=
nd probably others.
Once the search has returned the results, it should be relatively simply to=
use them to jump to that part of a track, and to display a rectangle on it=
s spectrogram.
Creating a web interface to allow entry of these ranges might not be so str=
aight forward, but as you say, it's all been done before with Facebook.
But is a rectangle good enough? On ambient recordings, sometimes the calls =
are so overwritten by multiple species and individuals that more precise id=
entification might be necessary, e.g. arrows and polygons.
This might be overkill. It's a big clue to the listener to at least have th=
e time and frequency range identified.
Peter Shute
> -----Original Message-----
> From:
> On Behalf Of Elias Elias
> Sent: Tuesday, 22 January 2013 11:39 AM
> To:
> Subject: Re: [Nature Recordists] xeno-canto developments
>
> Regarding the idea of "drawing a box around a signal," I
> suppose that I meant that it would be nice to tag noises in
> an audio file (long or
> short) much like one tags friends in a Facebook image.
> Essentially I envision dragging a courser (a cream-colored
> courser of course) around a sound (a frog's 'peep' or a
> sandpiper's 'churt' or an owl's 'who's awake? me too') and
> being able to fill in metadata such as species, sex, age,
> behavioral context and other parameters that XC already
> allows. Of course, the file will already have been date,
> time, latitude, longitude, elevation stamped. So say if one
> wanted to search for call notes of long-billed murrelet (I
> know there aren't any), one put that in the search box and
> bam up come up 25,50,100 thumbnails of sonogram images scaled
> to just the call or call phrase (these images would perhaps
> be squares much like google image search displays their
> search results). When the courser hovers over the image it
> expands to full resolution. With all the metadata in a table
> off to one side. If one clicks the sonogram it plays just the call.
>
> Dream dream dream....
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