Application of Response Surface Methodology (RSM) in Microspeaker Design Used in Mobile Phones

This paper proposes a technique for designing magnetic circuits for use in microspeakers, using the finite element method (FEM) and response surface methodology (RSM). RSM is a collection of statistical and mathematical techniques, used to find the best-fit representation of the response of the physical system under investigation. RSM was used to optimize the dimensions of the magnetic circuit. The optimization resulted in the following dimensions: an inner magnet radius (variable A) of 3.595 mm, a yoke thickness (variable B) of 0.4 mm, and a top plate thickness (variable C) of 0.25 mm.