At 03:20 PM 2/10/02 -0800, rad0 wrote:
>lots of good suggestions, thanks everyone.
>
>I changed the prgram around to step thru some frequencies and
>found a more correct freq.  And this will be ear splitting enough
>for my purposes.

Most of these are resonant at 2700 Hz, which for some reason is the point
where human hearing works the best.

>I thought the little piezo tranducer would act like a speaker, but I
>see now that is not really true.

It's response curve would put most rollercoasters to shame.

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