Adaptive Design of Linear-Phase Maximally Flat Filters for Digital Audio

摘要: Linear phase response and flat magnitude are highly desirable characteristics of any filter in audio signal processing. This paper proposes a simple efficient novel procedure for the design finite impulse (FIR) maximally filters with linear phase. The is based on Butterworth polynomials, bilinear transformation adaptive inverse modelling. Instead using prescribed through set discrete values, designed has equal to squared filter. multisine excitation, random noise used as excitation process. delayed noncausal component approximated causal Possible applications newly proposed method restoration old analogue recordings, acoustical measurements or engineering.