"I have recordings that I would like to clean up some of the background noise
(mainly loud highway traffic) so I can have better looking sonograms."
Hi Desiree,
You might have a look at the Avisoft-SASLab Pro software
(http://www.avisoft.com/soundanalysis.htm) that includes a manual spectrogram
eraser tool. Here is an example of how it works:
Original noisy spectrogram:
http://www.avisoft.com/images/tutorial_erase1.gif
Edited spectrogram:
http://www.avisoft.com/images/tutorial_erase2.gif
This kind of editing is applied to the spectrogram only (just like in an image
editing software). But it would also be possible to apply these modifications
to the underlying waveform (command "Tools"/"Remove erased spectrogram sections
from waveform..."). Depending on the selected settings, this procedure may
however introduce some distortions and artifacts.
Raimund Specht
Avisoft Bioacoustics
"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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