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In this paper, we study a novel method to avoid a premature convergence in the design of IIR (Infinite Impulse Response) filters using PSO (Particle Swarm Optimization). Although PSO is applicable to solve nonlinear optimization problems, it is reported that a local minimum stagnation occurs due to a strong directivity in the searching. Therefore, a method(More)
In this study, IIR (Infinite Impulse Response) filters having a null and the specified error in a stop band are designed using PSO (Particle Swarm Optimization). A new penalty function is introduced to an objective function in addition to the conventional penalty function that ensures the stability of IIR filters. Furthermore, the specified error is(More)
In this paper, a novel approach for designing two dimensional directivity of microphone array using IIR (Infinite Impulse Response) filters is presented. A design problem based on the minimax criterion is formulated as a non-linear programming problem and cannot be solved easily. In our method, PSO (Particle Swarm Optimization) is applied to solve such a(More)
In this paper, we study a method to avoid a premature convergence in the design of IIR (Infinite Impulse Response) filters using PSO (Particle Swarm Optimization). Although PSO is applicable to solve nonlinear optimization problems, it is reported that a local minimum stagnation often occurs due to a strong directivity during the searching. To avoid the(More)
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