A surface plasmon resonance assay apparatus is provided, in which a flow channel, a sensing surface and an optical assay unit are used. The method also comprises modifying at least a portion of the specific facial features of the actor head model according to the dubber head model such that the actor appears to be producing target sounds made by the dubber. Inert and impermeable capsules ensure stability of stored liquid formulations. A pressure releasing device releases the pressure contact between the thermal activation sheet and the activation heating apparatus when the detector does not detect the presence of the thermal activation sheet at the predetermined position. The phase display section shows a meshing position of the gears so that the gears mesh with each other at a position where a phase difference along a rotating direction of the stirring members occurs between the scrapers of the stirring members that are next to each other. The light-blocking part is provided on an incident side of the projection lens to transmit only the on-beam and shields light of a flat state region located between an on-beam and an off-beam.