Re: "A whining sound"

["oryoki2000" oryoki2000]

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