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1. Re: artifact in spectrogram created using Raven

Subject: 1. Re: artifact in spectrogram created using Raven
From: "laura.hilberg" laura.hilberg
Date: Wed Jul 18, 2012 6:49 am ((PDT))
Thanks, Raimund, the recommended settings are very helpful.

I will be looking at the 'song' only (the hissy, buzzy, insect-like vocaliz=
ation). The clicks you point to on the Xeno-Canto recording are more call n=
otes and so beyond the scope of my study.

The dialect differences (if there are any) are too subtle to classify visua=
lly, but I have been using brightness/contrast settings to help me get a be=
tter sense of where the song is. I will be analyzing simple parameters such=
 as length, high and low frequency (well, maybe not high frequency anymore)=
, rate of delivery, etc. No work like this has been done before; the only s=
tudy looking at their song found a slower rate (due to longer gaps between =
songs).

I am encouraged to hear that you feel like I can examine frequencies below =
6khz safely - I believe that as well. If you have any thoughts about what a=
spects of the song I could and could not safely measure, that might give me=
 some ideas that I haven't already thought of. I'll continue to look for su=
ggestions and advice about how to make the best of the data I have, and wil=
l be careful not to draw any conclusions that are beyond the scope of my re=
cordings.

I was very overwhelmed and discouraged by the responses I received - I want=
ed to admit my mistake and lack of experience so that I am fully aware of t=
he limitations of my study, and listen openly to constructive criticism. Lo=
oking back, I would do a lot of things differently (obviously). Being told =
that my work was apalling and unfit for research was pretty rough, though. =
I have very little time, money, or experience, and many of you do, and I tr=
uly have done my best.

I've continued to read every comment, though, and will try to find someone =
who can explain to me the bits I don't understand. I appreciate the time an=
d effort many of you have put into considering the causes of my problem - I=
 have a lot more information now.

Thanks,
Laura







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