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Re: electro-mechanical energy

Interesting... So if I understand correctly, the delay you spoke of is due to the mechanical wave propagating through the stuff within the cap, then bouncing off the walls and returning to the transduction area.

It sounds all too plausible. I wonder what the main effect is, I can visualize it modulating the capacitance or the effective resistance or directly generating charge. Have you found a good way to measure it? Can you actually see (or hear) the ringing? If so, what's a typical frequency and Q?

Beyond damping the energy at the case, couldn't we just try to find units with less electromechanical activity by listening at the case with ears or accelerometers or test them for microphonics?

Sorry for pelting you with questions, 'tis an interesing topic...

Rick

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