ELECTROMECHANICAL TRANSDUCER AND METHOD FOR DETECTING SENSITIVITY VARIATION OF ELECTROMECHANICAL TRANSDUCER

摘要

An electromechanical transducer includes a plurality of elements each including a first electrode and a second electrode with a gap therebetween, a voltage applying unit configured to apply an AC voltage to the first electrode, and a sensitivity variation computing unit configured to compute a sensitivity variation for each of the elements using a signal output from the second electrode of the element due to the application of the AC voltage.