On the design of high order digital audio equalizers
Alfonso Fernandez-Vazquez, Gordana Jovanović Doleček, Xue Mei Xie · 2007
This paper presents a new approach for designing high order digital audio equalizer filters. The new design is based on odd order analog allpass filters and bilinear transformation. The analog allpass filters are designed using Butterworth, Chebyshev I, Chebyshev II and elliptic polynomials. The new design results in an efficient structure, i.e., a parallel connection of two stable allpass filters.