| http://www.w3.org/ns/prov#value | - The electromechanical filter according to claim 1, wherein the second member is a wall-shaped member covering the first member, and further comprises: an input side electrode connected to the second member, causing excitation of the first member as a result of input of a signal to the second member; an electrode, connected to the first member, applying a voltage to the first member, and an output
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