As per Walters Advice I tested the Radio Shack stereo microphones
under a pillow to find the self noise. Here are the results.
http://www.akwebb.com/gkweather/ambient/selfnoise.html
Comments and observations would be appreciated.
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Greg Kunkel
>
> > I am unsure how to separate environmental and self
> > noise. A totally quiet environment is hard to find.
> > Possibly a flat plaine with no trees or grass on a day
> > with no wind.
>
> For self noise, you don't need to be outside. Stick the mic under a
few
> pillows in as quiet a room as you have. Self noise is the signal
the mic
> makes with no sound present. Set the settings the same as you
recorded
> outside.
>
> To get the true value you would need to know the noise level of the
> outside environment you recorded. Which requires a sound meter. But
you
> can get an idea how much of the recording was self noise without
knowing
> the absolute value.
>
> Walt
>
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