Category Archives: Filter Design

Sinc Function and Gauss-Legendre quadrature

UPDATE: August 13, 2015. Finally I was able to see the relation between the two. Gauss-Legendre quadrature is based on exactness on polynomials, which can be re-formulated in terms of frequency domain. As it turned out, this condition has very simple form:     where $n=0,2,4,\dots,2k$ is polynomial degree and $H(\omega)$ is frequency response of […]

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Digital Filters by Richard Hamming

This book showed me the beauty of digital signal processing, introduced magical world of filter design. Back then I was struggling with modern DSP books, which mostly focusing on facts and definitions (or even worse – Matlab) rather than underlying ideas and concepts. Hamming’s book is of different kind. It starts slowly with several examples […]

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