Acoustical Design Optimization of Speaker System for Sound Focusing using Evolutionary Weighted Sum

摘要

The directivity of speaker is maximized on mid-low frequency band using topology optimization. That is optimizing distribution of absorbing and reflecting material. The acoustic energy difference between bright and dark zones has been adopted as the objective function. The Evolutionary Weighted Sum (EWS) algorithm which is the new method for efficient design optimization for multiple target frequencies on mid-low frequency band is applied. This method adjusts the weighting factors of each objective function in progress of optimization by proposed proper criteria. The performance is exemplified by several acoustical optimization problems.