OPTIMAL MULTIOBJECTIVE DESIGN OF DIGITAL FILTERS USING TAGUCHI OPTIMIZATION TECHNIQUE

Abderrahmane Ouadi – Hamid Bentarzi – Abdelmadjid Recioui

   The multiobjective design of digital filters using the powerful Taguchi optimization technique is considered in this paper. This relatively new optimization tool has been recently introduced to the field of engineering and is based on orthogonal arrays. It is characterized by its robustness, immunity to local optima trapping, relative fast convergence and ease of implementation. The objectives of filter design include matching some desired frequency response while having minimum linear phase; hence, reducing the time response. The results demonstrate that the proposed problem solving approach blended with the use of the Taguchi optimization technique produced filters that fulfill the desired characteristics and are of practical use.

Keywords: multiobjective filter design, Taguchi optimization technique, magnitude response, minimum linear phase, group delay

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