Design of a sharp linear-phase FIR filter using the α-scaled sampling kernel
K. J. Kim, Jongho Seo, S.W. Nam, Yong Lian · International Conference on Signal Processing · 2007
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.