Very nice realization. :) Ok the piezo used as a speaker but I am interested in the right impedance to use it as a microphone. What is the maximum depth that a piezo record can perceive? 1 or 30 meters or more? Thank you very much.
Depth? Like their range? In hz..? Because they pickup a good range but hard to say exactly.. theyre not as sensitive as electret mics or diaphragm condensers or ribbon mics.. piezo picks up more vibration in a physical sense more so than a sound through air.. they make good pickups for drums or guitars..
