I am working on a project to find the time taken from a  datum point in the swing of a bell to the clapper striking and producing a sound.

I have a small voltage signal produced for the datum point and another for the sound of the clapper striking.

[color=blue]Help please.[/color]

I would like to know how I can determine the time taken between the two signals. Preferably by using a PC.  The units are probably micro-seconds.

This is to help make adjustments to different bells so that their effects are uniform. (The speed of the swing of the bells is the same).

Regards, bobminor