Hi David,
The documents couldn't be loaded at this end for some reason. Is there
another file? And thanks for the posting.
Bernie
On Nov 9, 2008, at 7:22 PM, David Kuhn wrote:
> Hi recordists, I'm extending this thread to show results of using the
> Sennheiser Pressure Buildup Ring on MKH20's to record Hawaiian Hoary
> Bat sounds. Here is the file I posted to the list, a screen shot of
> spectral view. I was unable to upload the .wav file as I could not
> reduce it to mp3 48Khz without losing the HF stuff, and the .wav file
> is too fat at 96KHz sample rate.
>
> http://tinyurl.com/5vnzfn
>
> And accompanying text--
>
> Hawaiian Bat Lasiurus cinereus semotus (subsp of Hoary Bat) recorded
> with MKH20 Mod SASS into MixPre, SD702, 32 bit 96KHz; seconds 1-3 is
> as recorded, showing echolocating calls 25-40 KHZ; seconds 4-36 are
> those sounds lowered in pitch as shown, using Audition Pitch Bender;
> Seconds 38-40 as recorded adding Pressure Buildup Ring, again 25-40
> KHZ; Then again pitch lowered as shown.
>
> And here is the mp3 of the pitch-lowered files.
>
> http://tinyurl.com/59e24h
>
> I perceive no difference between with and without the PB Rings--good
> data up to over 40 KHz. To apply them I pushed the mic's forward from
> the SASS body about 1.5 inches, then slipped the rings on. All
> recordings were with the SASS tripod mounted with 15 foot extension--
> the bats came very close to check it out.
>
> Bill Rainey what do you make of the sound at 30 sec on the Mp3? Some
> kind of social call?
>
> Thanks for any comments or suggested technique improvements. As this
> is an endangered subspecies this work may be valuable sometime.
>
> Aloha,
> David
>
> --- In Martyn Stewart <>
> wrote:
> >
> > The modified SASS that Walt made would probably not work because
> of
> > the diameter of the machined holes, The mics don't protrude enough
> > from the SASS, I don't think you can push the 20's far enough out
> to
> > place the rings on.
> >
> > Worth a try though! Remember to up the sample rate to 96k when
> using
> > the ring...
> >
> >
> >
> > Martyn
> > *************************************
> > Martyn Stewart
> > http://www.naturesound.org
> >
> > Redmond WA
> > 425-898-0462
> >
> > 47.65420118705451
> > -121.98158740997314
> >
> > Make every garden a wildlife habitat
> > **************************************
> > Listen to the Birds and the Bees at
> > http://naturesound.libsyn.org/
> > ------------------------------------------------
> > View a Nature Recordists Blog!
> >
> > http://naturesound.blogspot.com/
> >
> > http://naturesound.org/Copyright.html
> >
> > On Oct 21, 2008, at 8:27 PM, David Kuhn wrote:
> >
> > > So it is Martyn, right there new in the box, thanks. Do you, or
> does
> > > anyone know, if the ring would work with the MKH in a Walt-mod
> SASS?
> > > David
> > >
> > > --- In Martyn Stewart <mstew@>
> > > wrote:
> > > >
> > > > David
> > > >
> > > > The pressure build up ring is included with the MKH-20. You can
> > > expect
> > > > to record up to 25-30Khz. I have some recordings of myotis
> > > recorded
> > > > while sampling at 96k.
> > > >
> > > >
> > > >
> > > >
> > > >
> > > > Martyn
> > > > *************************************
> > > > Martyn Stewart
> > > > http://www.naturesound.org
> > > >
> > > > Redmond WA
> > > > 425-898-0462
> > > >
> > > > 47.65420118705451
> > > > -121.98158740997314
> > > >
> > > > Make every garden a wildlife habitat
> > > > **************************************
> > > > Listen to the Birds and the Bees at
> > > > http://naturesound.libsyn.org/
> > > > ------------------------------------------------
> > > > View a Nature Recordists Blog!
> > >
> >
> >
> >
> >
>
>
>
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