On 7/14/06, Jinx <joecolquitt@clear.net.nz> wrote:
> Low pass
>
> http://www.st-andrews.ac.uk/~www_pa/Scots_Guide/experiment/lowpass/lpf.html
>
> High pass
>
> http://www.st-andrews.ac.uk/~jcgl/Scots_Guide/experiment/highpass/hpf.html
>
> Just tried them practically and got the results I wanted
>

This one's a little more advanced, and avoids Java:

http://www.beis.de/Elektronik/Filter/Filter.html

Regards,
Mark
markrages@gmail
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