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Re: How would you clean up this file?

Subject: Re: How would you clean up this file?
From: "1GDW" 1GDW
Date: Sun Jun 25, 2006 9:19 pm (PDT)
I have encoded the DawnChorusMS.wav using Lame and I believe this
MP3 is much better than the MP3 link.  I would post it to the file
section for comparison but the files in there are taking 97% 0f the
space.

Gerald White Muscatine, IA

--- In  Ed Anson <>
wrote:
>
> Dana,
>
> The WAV file sounds much better than the mp3. It's a pretty good
> recording. This reminds me of why I almost never use mp3 encoding.
>
> I still don't hear much of the hiss you are worried about. But my
son
> does. I think that's due to the relative ages of our ears. I took
a
> quick look with a spectral analyzer and found an unusual amount of
> energy above 15 kHz. Combining that information with the one
annoying
> sound I heard (the constant drone of insects) makes me think that
there
> were a lot of insects in the area and they are making a lot of
high
> frequency noise. That makes me think that gentle use of a low pass
> filter might improve things a bit.
>
> Now I can also hear the rumble. Although it's not as annoying (to
me)
> as the drone of the insects, a high pass filter does reduce it a
bit
> and seems to clarify the rest of the sounds.
>
> Unfortunately, I don't know of anything that will remove the
constant
> insect noise without harming other sounds. So let's just be
purists and
> say that it's a part of what was there in Nature. OTOH I would be
> inclined to edit out the motorcycle noise at the end.
>
> Ed
>
>
>
>
> On Jun 25, 2006, at 6:19 AM, Dana Blackmer wrote:
>
> > Rob,
> >
> > Here are two links - the first is to an uncompressed portion of
the
> > file
> > before MS to XY decoding (it's a 70 second wav file, so will
take a
> > little
> > while to load).  The second is the same file with MS decoding
and
> > converted
> > to mp3.  I've included the mp3 version here because after I
tried to
> > retrace my steps from my original post, I think that there is a
50/50
> > chance that I mistakenly used an already decoded version of the
file
> > and
> > decoded it a second time before saving it as an mp3.
> >
> > Thanks for the help.
> >
> > Dana
> >
> > http://www.danablackmer.com/AudioFiles/DawnChorusMS.wav
> >
> > http://www.danablackmer.com/AudioFiles/DawnChorusXY.mp3
> >
> >
> >
> >
> > At 09:00 PM 6/24/2006 -0500, you wrote:
> >
> >> At 2:23 PM +0000 6/24/06, Dana Blackmer wrote:
> >>> Can this sound be filtered out or diminished without
> >>> getting the "blurby" sounds I sometimes get with a filter?
> >>
> >> Hi Dana--
> >> It seems like you should have a good recording there, but there
is
> >> something peculiar going on isn't there? Any chance you can
post a
> >> portion of the file uncompressed-- a straight copy of the field
> >> original, no m-s decoding? Best, Rob D.
> >>
> >>
> >
> >
> >
> >
> >
> >
> > "Microphones are not ears,
> > Loudspeakers are not birds,
> > A listening room is not nature."
> > Klas Strandberg
> > Yahoo! Groups Links
> >
> >
> >
> >
> >
> >
> >
>









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