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Re: full moon, full gain, full bit rate

Subject: Re: full moon, full gain, full bit rate
From: "John Hartog" <>
Date: Mon, 01 Aug 2005 05:49:01 -0000
Thanks for all the comments. I don't have any time tonight, but I'll
be back to the group tomorow evening to respond and post some short
wav files.
John Hartog



--- In  Rob Danielson <> wrote:
> I'm sure John will post some full res clips when he gets a chance.
> I'd be interested in seeing the saturation of a short clip of the
> original, full gain recording too--preferably without the running
> water. The mushy hiss is typical of compression noise when the
> original's bit depth saturation is low. The MP3 codec seems to assume
> the original will be well saturated, as is typical with music. I
> guess I could generate and assortment of sine tones at 5% saturation
> and them run them through a few compression settings. Rob D.
>
> At 4:34 AM +0200 8/1/05, Klas Strandberg wrote:
> >Rob, can you make a "hiss" demo with different MP3 settings?? I am
> >unfamiliar with that sort of hiss. The noise I hear on John's
recordings
> >sounds like "typical transistor noise".
> >
> >John - can we have a few seconds of the Robin or Coyote as .wav?? I
really
> >need to sort this out.
> >
> >Klas.
> >
> >At 03:24 2005-08-01, you wrote:
> >>Thanks John! Love the yotes. Is the first single perhaps calling for
> >>a  \partner thats out of range?  She/he is turning and calling in
> >>different directions right?  The sources of three slap back echos
> >>towards the end are interesting to think about too.
> >>
> >>I believe the widely distributed hiss, waivering and artifacts are
> >>largely the result of the the mp3 encoding. Its 1:45 long  and
> >>requires 1.6mb, so a data rate of 15.6K bytes/sec. Low even for mp3
> >>standards. An uncompressed file would give us a better sense of
> >>noise, if any, introduced byt the pre. Rob D.
> >>
> >>    =3D =3D =3D
> >>
> >>
> >>At 2:55 AM +0200 8/1/05, Klas Strandberg wrote:
> >>  >Hi John!
> >>  >
> >>  >In his "self-noise" debate: Now when I hear your recordings
again - after
> >>  >getting acquainted with the NT1A, - I think I hear a hiss which
does not
> >>  >come from the mic.
> >>  >
> >>  >It could be atmospheric noise (leaves, grass in very minor
wind) but it
> >>  >sounds electronic. Is it the PMD670 or something else?
> >>  >
> >>  >Or is this what the NT1A sounds like when it is cold?
> >>  >Which temperature did you have?
> >>  >I hear it also on the Robin recording. Same "hiss".
> >>  >
> >>  >Klas.
> >>  >
> >>  >   when I listen to your recordings.At 01:08 2005-08-01, you wrote:
> >>  >>Last weekend I returned to the Aldrich Mountains: this time we
stayed
> >>  >>at Deer Creek Guard Station.  One nice thing about this forest
service
> >>  >>cabin (and also the one at Murderers Creek) is no electricity. The
> >>  >>lights, refrigerator, and stove run on propane, which does
make some
> >>  >>noise but nothing like the annoying hums and buzzes that come from
> >>  >>electrical devices.
> >>  >>
> >>  >>Just after dark I went out on a walk listening for owl sounds,
but I
> >>  >>didn't hear any.  A little later as the nearly full moon rose
from the
> >>  >>trees and illumined the meadow, a coyote began beckoning others to
> >>  >>join in chorus.  In this recording there are two coyotes, some
> >>  >>crickets, and a mystery bird - any takers? (1.6MB) (PMD670
full gain,
> >>  >>NT1-As at 60deg and with barrier):
> >>  >>
> >>  >>http://www.rockscallop.org/ear/jh-050722-nightcoyote.mp3
> >>  >>
> >>  >>For Rob Danielson's comparisons of recorders and microphones, he
> >>  >>requested examples recorded at full gain. For the PMD-670, the
maximum
> >>  >>gain is an unimpressive 45dB.  Here's a 30 sec example at dawn
at full
> >>  >>gain.
> >>  >>
> >>  >>http://www.rockscallop.org/ear/jh-050723-0424_rl10-60dg-b1.mp3
> >>  >>
> >>  >>Here's another short example with the levels set at 7 out of 10.
> >>  >>
> >>  >>http://www.rockscallop.org/ear/jh-050723-0521_rl07-60dg-b1.mp3
> >>  >>
> >>  >>Here's another example (PMD670 set at 7) of coyotes joining in
chorus
> >>  >>around 5:30 am.
> >>  >>
> >>  >>http://www.rockscallop.org/ear/jh-050723-0526_coyotechorus.mp3
> >>  >>
> >>  >>Any comments, questions, or suggestions are welcomed.
> >>  >>-John Hartog
> >>  >>
> >>  >>
> >>  >>
> >>  >>
> >>  >>
> >>  >>
> >>  >>"Microphones are not ears,
> >>  >>Loudspeakers are not birds,
> >>  >>A listening room is not nature."
> >>  >>Klas Strandberg
> >>  >>Yahoo! Groups Links
> >>  >>
> >>  >>
> >>  >>
> >>  >>
> >>  >
> >>  >Telinga Microphones, Botarbo,
> >>  >S-748 96 Tobo, Sweden.
> >>  >Phone & fax int + 295 310 01
> >  > >email: 
> >>  >         
> >>  >
> >>  >
> >>  >
> >>  >"Microphones are not ears,
> >>  >Loudspeakers are not birds,
> >>  >A listening room is not nature."
> >>  >Klas Strandberg
> >>  >Yahoo! Groups Links
> >>  >
> >>  >
> >>  >
> >>  >
> >>
> >>
> >>--
> >>Rob Danielson
> >>Film Department
> >>University of Wisconsin-Milwaukee
> >>
> >>
> >>"Microphones are not ears,
> >>Loudspeakers are not birds,
> >>A listening room is not nature."
> >>Klas Strandberg
> >>Yahoo! Groups Links
> >>
> >>
> >>
> >>
> >
> >Telinga Microphones, Botarbo,
> >S-748 96 Tobo, Sweden.
> >Phone & fax int + 295 310 01
> >email: 
> >         
> >
> >
> >
> >"Microphones are not ears,
> >Loudspeakers are not birds,
> >A listening room is not nature."
> >Klas Strandberg
> >Yahoo! Groups Links
> >
> >
> >
> >
>
>
> --
> Rob Danielson
> Film Department
> University of Wisconsin-Milwaukee




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