It's there when using 96 kHz as well, but you can't hear it, just see
it at the scope.
It must be a PCB problem, some clock frequency spilling over to the
audio side. If so, no new firmware can fix it.
Klas.
At 16:54 2007-01-09, you wrote:
>The whine could be a permanent flaw of the H4. Maybe folks know of an
>exception, but all I've encountered is the whine and consistent
>reports of it when recording at 44.1K/16 and 48K/24 but NOT when
>recording at 96K/24. Here's my test:
>http://www.uwm.edu/~type/audio-art-tech-gallery/pages/SD722_Rolls%3EHiMD_S=
amsonH4.html
>Maybe there's a firmware fix? I couldn't find an firmware upgrade. Rob D.
>
>At 2:36 PM +0000 1/9/07, oryoki2000 wrote:
> >Comments about the Zoom H4 self-noise
> >are found here:
> >
> >Message #25195 posted by Robin Carter
> >Message #25196 by Rob D.
> >
> >Mike Rosenthal posted the original message
> >on the Yahoo Phonography group in November.
> >The noise is described as "whirring."
> >A recording containing the noise is here
> >http://www.tempaural.net/audio/zoomnoise.wav
> >
> >Listening to the file, Rob D. wrote:
> >"Hi Mike-- I hear some line hum and a dropping,
> >pulsing high frequency tone that seems identical
> >in both channels. Do you have other mics to try
> >in the recorder to see if these sounds are in the
> >recorder? I'd guess they're in the adapter/mics
> >or a relation between the adapter/H4."
> >
> >I don't think the source of this particular problem
> >was identified.
> >
> >--oryoki
> >
> >
> >
> >"Microphones are not ears,
> >Loudspeakers are not birds,
> >A listening room is not nature."
> >Klas Strandberg
> >Yahoo! Groups Links
> >
> >
> >
>
>
>--
>Rob Danielson
>Peck School of the Arts
>University of Wisconsin-Milwaukee
>http://www.uwm.edu/~type/audio-art-tech-gallery/
>
>
>
>
>
>"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:
website: www.telinga.com
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