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Re: artifact in spectrogram created using Raven

Subject: Re: artifact in spectrogram created using Raven
From: "Wil Hershberger" wil_hershber=
ger
Date: Mon Jul 16, 2012 12:51 pm ((PDT))

It would be great if you can get a file posted somewhere for folks to look =
at and see what is going on. Since this is your research data I am certain =
that you would like to find a way to be able to use it and not have a numbe=
r of files not be included.
It also appears that the spectrogram window size may not be set appropriate=
ly.
I hope that we can help,

Wil Hershberger
Nature Images and Sounds, LLC
Hedgesville, WV
The Songs of Insects
My Blog










On Jul 15, 2012, at 8:11 PM, laura.hilberg wrote:

> Hi everyone,
>
> I haven't posted here before, but I've been following this forum for a fe=
w months now. I am finishing up my Master's degree in conservation biology,=
 and my thesis is a dialect study of the Nelson's Sparrow (found on the coa=
st of New England and inland from North Dakota up through interior Canada).=

>
> I just returned from my field season, recording sparrows in multiple loca=
tions in Maine. I'll be analyzing my recordings using Raven, and one of the=
 first things I noticed when I opened it up was a strange white space under=
neath the song, which roughly correlates with amplitude and pitch. It looks=
 like a white echo - a silent space in a background otherwise full of traff=
ic and wind noise. Since I know that the traffic and wind noise didn't disa=
ppear, I'm assuming that it is not really there? "I uploaded a picture and =
sound clip in the "File" section of the Yahoo Group in a folder called "Nel=
son's Sparrow").
>
> The white space is always there to some degree, but it is much more extre=
me in the loud songs, in which I can also hear a little bit of a bubbling s=
ound (hard to describe). My only idea is that my gain was turned up too hig=
h and that distorted the sound at times?
>
> I realize that I don't have all the right vocabulary or a deep understand=
ing so this might be hard to follow - does anyone have any thoughts or idea=
s?
>
> Thanks,
> Laura H.
>
>










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