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Re: Clanton, AL followup

Subject: Re: Clanton, AL followup
From: "John Hartog" hartogj
Date: Sat Jun 16, 2007 11:19 pm ((PDT))
David - that is a wonderful recording,thanks for sharing.

And Rob - 
It is interesting to listen for the "different spatial plane" aspect
you mention.  I haven't had much experience using m/s yet, but I'm
wondering if m/s might sometimes create a rift between stereo and mono
dimensions yielding straight-on sounds that appear as if on a separate
plane, because the L/R at straight ahead are essentially phase
canceled leaving only the original m channel at this position.  Could
it be possible that the central mono and the surrounding stereo might
not be meshing perfectly? Or am I way off with this idea?

John Hartog


--- In  Rob Danielson <> wrote:
>
> At 11:15 PM +0000 6/14/07, wildlifeanalysis wrote:
> >Hello Rob
> >
> >The mic rig I used was an MKH30 and MKH40 in an MS configuration on 
> >a tripod pointed
> >ever so slightly upward (~15 degrees) into the trees toward the 
> >bird-voiced treefrog's
> >perches. I decoded in Peak on Mac with an AudioUnits plugin called 
> >Stereo Image Munger,
> >which is free and effective. I gave the side mic a little more 
> >prominence than I think is
> >traditional (the mid was at 100% and the side at 60% of full) 
> >because the sound scene was
> >so encompassing.
> >
> >In the recording, if memory serves, the first calling bullfrog is at 
> >about 12 oclock in the
> >middle of the sound field.
> 
> I was guessing it was M-S, possibly a 30 and a 60. The bullfrog that 
> starts at 29 seconds seems like its on a different spatial plane from 
> the other sound sources. (I think the same individual is also singing 
> during the initial fade in).  Even if other calls are from behind the 
> mics, all of the other calls seem located in the "front" of the 
> stereo field to me.  Perhaps the discrepant bullfrog's calls are 
> reflected within the space differently. I'm trying to gather clues 
> about how this effect is produced.
> 
> >The second responder is at about 4 oclock slightly behind me,
> >as you said - so the image is a very hard right pan. I have noticed 
> >that since the MKH40
> >has a  cardiod pattern on either side, they are very sensitive to 
> >sounds from behind. I
> >wonder if some sort of parabola would cut down on this when necessary.
> >
> >If you would like, I can upload the raw MS file if you would like to 
> >remix the sound field.
> 
> That would be interesting to try. Your mix is very pleasant as is. 
> Thanks for the additional info! Rob D.
> 
> >
> >David
> >
> >
> >
> >--- In  Rob Danielson <type@> wrote:
> >>
> >>  Hi David--
> >>  Thanks for sharing the beautiful recording and
> >>  heartfelt account. I'm in the process of a
> >>  location change in response to similar
> >>  impressions.
> >>
> >>  Your recording makes me curious about the mics
> >>  and the array or rig you used in relation to the
> >>  stereo field and a unique quality in this
> >>  recording.  At 29 seconds, a bull frog starts
> >>  calling in the middle-ground.  Do you know where
> >>  this frog was located,.. possibly behind the mics
> >>  at "6 o'clock?"  At 14 seconds, is that bull frog
> >>  located at about "4 o'clock"--or hard right?  If
> >>  you don't mind sharing the info, what type of
> >>  mics & array did you use? Thanks, Rob D.
> >
> >
> >
> >"While a picture is worth a thousand words, a
> >sound is worth a thousand pictures." R. Murray Schafer via Bernie
Krause
> >
> >Yahoo! Groups Links
> >
> >
> >
> 
> 
> -- 
> Rob Danielson
> Peck School of the Arts
> Department of Film
> University of Wisconsin- Milwaukee
>






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