[PD] (OT) safely connect piezo transducer to soundcard as microphone

[Matteo Sisti Sette]

On 04/21/2012 02:14 AM, richard duckworth wrote:
> Piezo mics should go through a very high impedance buffer stage.
 > ......

Thank you very much, that was illuminating.

However for now I'm was looking for a simplistic solution without the 
slightest care for sound quality, as I'm just using the signal to take 
its envelope in order to detect knocks and the like.

But now I know why it sounds the way it sounds and that with an 
appropriate high impedance buffer stage it can sound way better, the day 
I'll need it :D