A device for collecting sounds comprises a plurality of microphones arranged in a predetermined pattern, wherein selected microphones are directed to an object. One embodiment provides a common substrate of a first conductivity type and at least two wells of a second conductivity type. The first oscillator outputs a first periodic signal required for the control unit to control the step-up action of the charge pump circuit. The invention can be manufactured and sold at a cost similar to the resurfacing costs of the present non-disposable printing rollers but is as structurally sound as a non-disposable printing roller. The magnetic film forming apparatus comprises an electroless plating apparatus having a magnetic field generation apparatus for generating a magnetic field around and parallel to a substrate disposed such that the surface of the substrate is in contact with a plating solution in a plating tank.