Filter design and equalization - MIT OpenCourseWare
Filter design and equalization - MIT OpenCourseWare
Filter design and equalization - MIT OpenCourseWare
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choose h to minimizelog-Chebychev magnitude <strong>design</strong>max | 20 log 10 | H(ω) | − 20 log 10 D(ω) |ω• D is desired transfer function magnitude(D(ω) > 0 for all ω)• find minimax logarithmic (dB) fitreformulate asminimize tsubject to D(ω) 2 /t ≤ R(ω) ≤ tD(ω) 2 ,0 ≤ ω ≤ π• convex in variables r, t• constraint includes spectral factorization condition<strong>Filter</strong> <strong>design</strong> 30