Re: Lightning arrestor and high-pass filter

["Everett Palmer" wwpft817]

Hello David,

I think that you can use the sound program Audacity to filter sound files.
Look at the FFT filter under effects menu.

Everett



At 06:28 PM 8/14/2007, David Martin wrote:

>I've had it working for three nights now.  I'm getting decent
>signals, but I'd like to use as much gain as possible. However, low
>frequency noise from traffic, trains, and and aircraft can overload
>the system. (I'm a mile from relatively busy railroad tracks and 10
>miles from a busy airport).  I am just monitoring songbird flight
>calls and only need to record above 2000 Hz, so I should be able to
>greatly reduce the problem with a high-pass filter.   Can anyone
>suggest a filter that might work or does anyone know of a plan for
>building one?
>
>David
>
>
>
>
>"While a picture is worth a thousand words, a
>sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
>
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