Well, after all of this discussion and Peter's observation about the noise=
essentially going away when the M10 is 1.5 m away, it reminded me of my own=
bad
ex[erience at Seney last year.
I set up my M10 in a waterproof case for an overnight drop and left it. I w=
as
pressed for time (and by hoards of mosquitos!), so I didn't take the time t=
o do
a headphone check before I left it. The next day I found that my recording =
had
been ruined by a 'whiney' sound and I noticed that the shielded mic cable h=
ad
been pulled across the front of the display. The noise. of course, cvame fo=
rm
the display refresh of the M10.
****The Sony M10's display is quite evil when it comes to generating electr=
ical
noise!!
Do not=C2=A0have the M10 anywhere=C2=A0near=C2=A0your mics and keep your mi=
c cable extended
straight out & directly away form the mic jack.
Then don't attempt to hold the M10 with any part of your hand near the disp=
lay.
If you have to handle it at all while recording, hold it from underneath wi=
th
your hand only touching the lower half of the metal case.
I have run into this problem with many different mics, piezo pickups, geoph=
ones,
etc.,=C2=A0and it doesn't matter whether they are PIP'ed or not.
The basic problem is that Sony completely botched the sheilding for that di=
splay
(the backlight doesn't matter, it's the digital refresh) and when you crank=
up
the gain for low-level signals, the display noise couples into the input.
Sorry I didn't think of this earlier, but now you know. Many other recorder=
s
have the same effect when touching the display, etc., but the Sony M10 is
definitely the worst.
Take care,
Greg
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