Patent ID: 6427016
Filing Date: 2002-07-30
Classification: H04R

Abstract:
A method of making an acoustic device relying on bending wave action in an area of a panel member, the method comprising:selecting a physical parameter to be varied, the physical parameter being selected from the group consisting of configuration/geometry of said area of the panel member, the bending stiffness of said area of the panel member, and the location of a bending wave transducer in said area of said panel member, selecting a power transfer related parameter of said panel member, the power transfer related parameter being a function of at least one of the physical parameters and being selected from the group consisting of input power transfer, mechanical impedance and power output, varying the physical parameter and analytically assessing a measure of the power transfer related parameter, as a function of the physical parameter, selecting the value of the physical parameter which provides a minimum or minima of deviation of the power transfer related parameter whereby smoothness of the power transfer and hence satisfactory acoustic device performance over a desired frequency range is achieved.