Good work Jim ! I also like to examine spectrograms to work out what is go=
ing on when we listen.
You can find my own analysis of the spectrogram of Collared Dove here: http=
://tinyurl.com/by3g2o2 I got that by expanding the vertical and horizontal=
axes even more than you did. Maybe you can try that with your calls and se=
e if you can find that funny little "grace note" that precedes the first tw=
o main notes (the ones I labelled "A") - I do not hear then in every phrase=
of your recording only occasionally - and now I am wondering if that is a =
transatlantic difference or simply individual variation ? Something to watc=
h out for this spring I think.
Thanks for stimulating my further curiosity in what for me is a bit of a bo=
ring bird !
Chris
http://www.wildechoes.org
--- In Jim Morgan wrote:
>
> Hi Max,
>
> I first looked at the spectrogram in the normal scale that displayed the
> notes as thick dashes with little detail as to there real shape. Then I
> looked at the spectra on an very expanded scale that revealed a huge amou=
nt
> of detail. The surprise to me was the huge amount of detail.
>
> I would be very interested in your spectra.
>
> Best,
>
> Jim
>
> On Sat, Feb 9, 2013 at 11:46 AM, Max wrote:
>
> > **
> >
> >
> > Hi Jim,
> > I'd be interested to know why you were surprised at the result? I have
> > these birds in my garden all day long, but unfortunately live in a nois=
y
> > situation close to a major trunk road. Once they get into full song aga=
in
> > I'll make a recording and compare with your speccy.
> > Cheers
> > Max
> >
> >
> > --- In Jim Morgan wrote:
> > >
> > > I expanded the scale of the Eurasian Collared-Dove recording so the
> > > spectrogram would show the shape of the individual notes. I was
> > > surprised at result and thought that some of you might be interested.
> > >
> > > Here is the recording that is the same as the previously posted
> > > recording: http://soundcloud.com/fundador/557-eucdo
> > >
> > > And here is the spectrogram:
> > >
> > https://picasaweb.google.com/fundador.photos/EurasianCollaredDove#slide=
show/5842974566215133938
> > >
> > > Jim Morgan
> > > Prescott AZ
> > >
> >
> >
> >
>
>
>
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