have you tried mounting the capsules in axis, one mic
slightly behind the other. that way, if one mic is in
focus and the other is not, phase cancellation should
leave behind only the sound focussed on by the dish.
umashankar
--- John Hartog <> wrote:
>
>
>
> Thanks Rich, for your picture of your mic
> configuration and
> the audio clip. I find your method of noise
> reduction
> interesting.=20
> Here's a picture of how my Shure WL183s are
> currently
> mounted:
> http://www.hevanet.com/rockscallop/183sInDish.jpg
> and a short (160k) snippet of Red Winged Blackbirds
> with other wetland sounds and suburban noise.
> http://www.hevanet.com/rockscallop/041226_RWBB.mp3
> I'm not certain how far away the subjects were -
> 100ft
> or so. The capsules are mounted 1.5in apart on an
> aluminum
> tube.
> John Hartog
>
> --- In "Rich Peet"
>
> <> wrote:
> >
> > Still working with the parabolic mic
> configurations.
> > Rough photo and sound to illustrate only.
> >
> > As a hybred between barrier and a no barrier
> stereo mic
> method used in
> > parabolic dishes, I constructed a T mic using the
> 183
> elements.
> >
> > Pictured without foam wind screens as seen through
> the dish.
> > http://home.comcast.net/~richpeet/q1t.jpg
> >
> > Sound when focused at bird seed on the ground with
> quiet
> visiting
> > redpolls and pine grosbeaks at about 100feet. Note
> the sound
> of the
> > logging equipment a few miles away.
> > 1.5 meg download
> > http://home.comcast.net/~richpeet/183t.mp3
> >
> > First segment of three is the raw stereo track.
> >
> > Second segment is a mono track made by combining
> the two
> stereo channels.
> >
> > Third segment is a mono track with one channel
> phase
> inverted prior to
> > combining the two stereo tracks.
> >
> > I thinik it does a pretty good job of reducing the
> logging
> background
> > noise. Of course it can not reduce the background
> noise more
> than the
> > actual gain of the dish itself.
> >
> > Rich
>
>
>
>
>
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--------------------------------------------------------------------~->
>
>
> "Microphones are not ears,
> Loudspeakers are not birds,
> A listening room is not nature."
> Klas Strandberg
> Yahoo! Groups Links
>
>
>
>
>=20
>
>
>
>
=09=09
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