Design of Cosine Modulated Non-uniform filter bank using Particle Swarm Optimization

In this paper, a PSO based design of CM-NUFB is presented. The coefficients of the prototype filter have been optimized to minimize the passband and stopband energy. Firstly, a uniform CMFB has been designed, and the CM-NUFB has been obtained using merging of adjacent channels of uniform CMFBs. In this work, three, four and five-channel CM-NUFBs have been designed using the proposed method. Pass band energy (Ep), stop band energy (Es) and PRE has been considered for the performance evaluation of CM-NUFB.