At 04:05 PM 2/15/01 -0600, you wrote:
>Is there a "standard" algorithm for counting the number of cycles in a
>signal based on the peaks and valleys in that signal?

In analog electronics, this could be done by low-pass filtering the
signal, AC coupling it, and applying a zero-crossing detector with
some hysteresis. You can do the same thing digitally, assuming
the frequency isn't too high.

If the signal has multiple humps in it or is otherwise strange, you
may have to do a bit more work.

Best regards,
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