naturerecordists
[Top] [All Lists]

full moon, full gain, full bit rate

Subject: full moon, full gain, full bit rate
From: Rob Danielson <>
Date: Sun, 31 Jul 2005 20:24:52 -0500
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


________________________________________________________________________
________________________________________________________________________

<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU