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 - af=
ter
>> >getting acquainted with the NT1A, - I think I hear a hiss which does n=
ot
>> >come from the mic.
>> >
>> >It could be atmospheric noise (leaves, grass in very minor wind) but i=
t
>> >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 servic=
e
>> >>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 th=
e
>> >>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 maximu=
m
>> >>gain is an unimpressive 45dB. Here's a 30 sec example at dawn at ful=
l
>> >>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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