| http://www.w3.org/ns/prov#value | - According to yet another aspect, an actuator system includes an actuator including an armature, a membrane, and a coil operable by application of a coil drive thereto in a first drive direction to conduct current in a first current direction and thereby tend to drive the armature to a first end position; a sound sensor so coupled to the actuator as to sense sound made by the armature in reaching t
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