4aEA4. Finite-element and boundary-element computer modeling for loudspeaker cone design.

Session: Thursday Morning, June 19

Author: Roger E. Shively
Location: Harman-Motive, Inc., 1201 S. Ohio St., Martinsville, IN 46151


The use of finite-element and boundary-element computer modeling for the design and optimization of loudspeaker cones is demonstrated. First, the specifics of the analytical model and theory are summarized. The experimental setup, which utilizes laser vibrometry is described, and the correlation of analytical FEM and BEM models to experimental models and anechoic measurements for a test case are reviewed. Three case histories are then illustrated: (1) correlation of a high-frequency model, (2) a design case for maintaining a current loudspeaker packaging size with improved frequency response and distortion over the current performance, and (3) a design case for evaluating a new material for a loudspeaker's diaphragm.

ASA 133rd meeting - Penn State, June 1997