Design of Half-Band FIR Filters for Signal Compression
Pavel Zahradník, Boris Šimák, Miroslav Vlček, Michal Kopp · 2012
Abstract—An efficient design of equiripple half-band FIR filters for signal compression is presented. Solution of the approximation problem in terms of generating function and zero phase transfer function for the equiripple half-band FIR filter is shown. The equiripple half-band FIR filters are optimal in the Chebyshev sense. The closed form solution provides an efficient computation of the impulse response of the filter. Two examples are included. The robustness of the design is emphasized. The Matlab code of the design procedure is included. Keywords-FIR filter; half-band filter; equiripple approximation; signal compression. I.