Design of a sharp linear-phase FIR filter using the α-scaled sampling kernel

Authors:
K. J. Kim;J. B. Seo;S. W. Nam;Y. Lian
Affiliations:
Hanyang University, Department of Electronics and Computer Engineering, Seoul, Korea;Hanyang University, Department of Electronics and Computer Engineering, Seoul, Korea;Hanyang University, Department of Electronics and Computer Engineering, Seoul, Korea;National University of Singapore, Electrical and Computer Engineering Department, Singapore
Venue:
SIP'07 Proceedings of the 6th Conference on 6th WSEAS International Conference on Signal Processing - Volume 6
Year:
2007

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Abstract

In this paper, a new approach is proposed for the design of sharp linear-phase FIR filters using the α-scaled sampling kernel. The proposed filter design approach provides a closed-form expression for the filter coefficients by employing the α-scaled (here, α is real-valued) sampling kernel. The design procedure is simpler and easier compared to well-known sharp linear-phase FIR filter design methods such as interpolated FIR(IFIR) and frequency-response masking(FRM) technique. We show, by means of examples, that the proposed approach yields similar filter performance but much simpler design procedures than conventional sharp filter design methods.