Hello! I decided to do some experiments with mechanical clocks, so I worked a little on picking up escapement ticking sound, with the idea of processing it and obtaining a "clean" digital pulse to feed a counter.
So far, I have not yet been able to find the best way to obtain a digital pulse, but I have already built the preamp for the piezoelectrick pickup, that I used to feed the mic input of a PC sound card for spectrum analysis. The timing could eventually be done in software because the whole idea of measuring watches by picking up their noise almost surely doesn't allow high resolution anyway, but I will plan to try hardware solutions as well in the future. I hope to be able to measure the jitter of the clock, but it will be very hard. In the meantime, with the free software Biburo you can download here http://tokeiyade.michikusa.jp you can regulate your wrist watch. Best regards, Andrea Baldoni
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