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Re: Physics of moisture-induced mic noise

Subject: Re: Physics of moisture-induced mic noise
From: "Mike Rooke" picnet2
Date: Thu Jan 7, 2010 5:06 am ((PST))
My own. / an electret running from the plug in power of a sony D50.
mail me if you would like more info.

BR
Mike.


--- In  "Max" <> wrote:
>
> Hi Mike,
> Could we know which microphone it was please?
> Max
> 
> --- In  "Mike Rooke" <yg@> wrote:
> >
> > I tested an omni taking it from outdoors where it had been all night from 
> > -19 to -15C when i moved it to a sauna at +65C with 60% humidity. Left it 
> > for 15 minutes recording and listened for any pops /sissle / "wrong" 
> > sounds, nothing at all - continued working as expected.  The mic stand was 
> > nice and warm and thawed out too :)
> > 
> > If it drops to -20C again Ill repeat the test, cycling an electret with 
> > rapid temperature swings may prematurely age the electret / reduce the 
> > sensitivity - but in the interests of testing if the capsule can withstand 
> > such thermal shocks / swings, its interesting. 
> > 
> > -Mike.
> > 
> > 
> > --- In  "Grant Finlay" <grantfinlay@> 
> > wrote:
> > >
> > > FYI: 
> > > Don't forget that condensation will form regardless of the mic if you 
> > > take it from a cool to warm environment.
> > > I leave mine outside overnight or give it chance to acclimatize before 
> > > doing any recording.
> > > 
> > > Regards, 
> > > Grant.
> > >
> >
>








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