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📄 program4.m

📁 这是一个优化IIR滤波器的源码,能设计出8个极点8个零点的IIR优化滤波器
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(* Code Generated by Mathematica packages written by Brian L. Evans *)(* Copyright (c) 1993-1997 by the Regents of the University of California *)(* All Rights Reserved. *)(* See the copyright file for copyright notice, *)(* limitation of liability, and disclaimer of warranty provisions. *)(* Overall Cost Function *)InputForm[WQ*(-0.5 + ((Sqrt[a[1]^2 + b[1]^2]*Sqrt[a[2]^2 + b[2]^2]*            Sqrt[a[3]^2 + b[3]^2]*Sqrt[a[4]^2 + b[4]^2])/          (a[1]*a[2]*a[3]*a[4]))^(1/4)/2) +    (Wms*integrate[((a[1]^2 + b[1]^2)^2*(a[2]^2 + b[2]^2)^2*          (a[3]^2 + b[3]^2)^2*(a[4]^2 + b[4]^2)^2*          ((c[1]^2 + d[1]^2)^2 + w^2*(w^2 + 2*(c[1]^2 - d[1]^2)))*          ((c[2]^2 + d[2]^2)^2 + w^2*(w^2 + 2*(c[2]^2 - d[2]^2)))*          ((c[3]^2 + d[3]^2)^2 + w^2*(w^2 + 2*(c[3]^2 - d[3]^2)))*          ((c[4]^2 + d[4]^2)^2 + w^2*(w^2 + 2*(c[4]^2 - d[4]^2))))/        (((a[1]^2 + b[1]^2)^2 + w^2*(w^2 + 2*(a[1]^2 - b[1]^2)))*          ((a[2]^2 + b[2]^2)^2 + w^2*(w^2 + 2*(a[2]^2 - b[2]^2)))*          ((a[3]^2 + b[3]^2)^2 + w^2*(w^2 + 2*(a[3]^2 - b[3]^2)))*          ((a[4]^2 + b[4]^2)^2 + w^2*(w^2 + 2*(a[4]^2 - b[4]^2)))*          (c[1]^2 + d[1]^2)^2*(c[2]^2 + d[2]^2)^2*(c[3]^2 + d[3]^2)^2*          (c[4]^2 + d[4]^2)^2), {w, ws, 100*ws}])/(99*ws) +    (Wmp*integrate[(-1 + ((a[1]^2 + b[1]^2)*(a[2]^2 + b[2]^2)*             (a[3]^2 + b[3]^2)*(a[4]^2 + b[4]^2)*             Sqrt[((c[1]^2 + d[1]^2)^2 +                  w^2*(w^2 + 2*(c[1]^2 - d[1]^2)))*               ((c[2]^2 + d[2]^2)^2 + w^2*(w^2 + 2*(c[2]^2 - d[2]^2)))*               ((c[3]^2 + d[3]^2)^2 + w^2*(w^2 + 2*(c[3]^2 - d[3]^2)))*               ((c[4]^2 + d[4]^2)^2 + w^2*(w^2 + 2*(c[4]^2 - d[4]^2)))])/           (Sqrt[((a[1]^2 + b[1]^2)^2 + w^2*(w^2 + 2*(a[1]^2 - b[1]^2)))*               ((a[2]^2 + b[2]^2)^2 + w^2*(w^2 + 2*(a[2]^2 - b[2]^2)))*               ((a[3]^2 + b[3]^2)^2 + w^2*(w^2 + 2*(a[3]^2 - b[3]^2)))*               ((a[4]^2 + b[4]^2)^2 + w^2*(w^2 + 2*(a[4]^2 - b[4]^2)))]*             (c[1]^2 + d[1]^2)*(c[2]^2 + d[2]^2)*(c[3]^2 + d[3]^2)*             (c[4]^2 + d[4]^2)))^2, {w, 0, wp}])/wp +    (Wmt*integrate[(-(w/(wp - ws)) + ws/(wp - ws) +           ((a[1]^2 + b[1]^2)*(a[2]^2 + b[2]^2)*(a[3]^2 + b[3]^2)*             (a[4]^2 + b[4]^2)*             Sqrt[((c[1]^2 + d[1]^2)^2 +                  w^2*(w^2 + 2*(c[1]^2 - d[1]^2)))*               ((c[2]^2 + d[2]^2)^2 + w^2*(w^2 + 2*(c[2]^2 - d[2]^2)))*               ((c[3]^2 + d[3]^2)^2 + w^2*(w^2 + 2*(c[3]^2 - d[3]^2)))*               ((c[4]^2 + d[4]^2)^2 + w^2*(w^2 + 2*(c[4]^2 - d[4]^2)))])/           (Sqrt[((a[1]^2 + b[1]^2)^2 + w^2*(w^2 + 2*(a[1]^2 - b[1]^2)))*               ((a[2]^2 + b[2]^2)^2 + w^2*(w^2 + 2*(a[2]^2 - b[2]^2)))*               ((a[3]^2 + b[3]^2)^2 + w^2*(w^2 + 2*(a[3]^2 - b[3]^2)))*               ((a[4]^2 + b[4]^2)^2 + w^2*(w^2 + 2*(a[4]^2 - b[4]^2)))]*             (c[1]^2 + d[1]^2)*(c[2]^2 + d[2]^2)*(c[3]^2 + d[3]^2)*             (c[4]^2 + d[4]^2)))^2, {w, wp, ws}])/(-wp + ws) +    (Wph*integrate[(ArcTan[(w - b[1])/a[1]] + ArcTan[(w + b[1])/a[1]] +           ArcTan[(w - b[2])/a[2]] + ArcTan[(w + b[2])/a[2]] +           ArcTan[(w - b[3])/a[3]] + ArcTan[(w + b[3])/a[3]] +           ArcTan[(w - b[4])/a[4]] + ArcTan[(w + b[4])/a[4]] -           ArcTan[(w - d[1])/c[1]] - ArcTan[(w + d[1])/c[1]] -           ArcTan[(w - d[2])/c[2]] - ArcTan[(w + d[2])/c[2]] -           ArcTan[(w - d[3])/c[3]] - ArcTan[(w + d[3])/c[3]] -           ArcTan[(w - d[4])/c[4]] - ArcTan[(w + d[4])/c[4]] -           (3*w*((-2*wmax*a[1] -                   (ArcTan[(wmax - b[1])/a[1]] +                      ArcTan[(wmax + b[1])/a[1]])*                   (-wmax^2 - a[1]^2 + b[1]^2) -                   a[1]*b[1]*Log[1 + (wmax - b[1])^2/a[1]^2] +                   a[1]*b[1]*Log[1 + (wmax + b[1])^2/a[1]^2])/2 +                (-2*wmax*a[2] -                   (ArcTan[(wmax - b[2])/a[2]] +                      ArcTan[(wmax + b[2])/a[2]])*                   (-wmax^2 - a[2]^2 + b[2]^2) -                   a[2]*b[2]*Log[1 + (wmax - b[2])^2/a[2]^2] +                   a[2]*b[2]*Log[1 + (wmax + b[2])^2/a[2]^2])/2 +                (-2*wmax*a[3] -                   (ArcTan[(wmax - b[3])/a[3]] +                      ArcTan[(wmax + b[3])/a[3]])*                   (-wmax^2 - a[3]^2 + b[3]^2) -                   a[3]*b[3]*Log[1 + (wmax - b[3])^2/a[3]^2] +                   a[3]*b[3]*Log[1 + (wmax + b[3])^2/a[3]^2])/2 +                (-2*wmax*a[4] -                   (ArcTan[(wmax - b[4])/a[4]] +                      ArcTan[(wmax + b[4])/a[4]])*                   (-wmax^2 - a[4]^2 + b[4]^2) -                   a[4]*b[4]*Log[1 + (wmax - b[4])^2/a[4]^2] +                   a[4]*b[4]*Log[1 + (wmax + b[4])^2/a[4]^2])/2 +                (2*wmax*c[1] +                   (ArcTan[(wmax - d[1])/c[1]] +                      ArcTan[(wmax + d[1])/c[1]])*                   (-wmax^2 - c[1]^2 + d[1]^2) +                   c[1]*d[1]*Log[1 + (wmax - d[1])^2/c[1]^2] -                   c[1]*d[1]*Log[1 + (wmax + d[1])^2/c[1]^2])/2 +                (2*wmax*c[2] +                   (ArcTan[(wmax - d[2])/c[2]] +                      ArcTan[(wmax + d[2])/c[2]])*                   (-wmax^2 - c[2]^2 + d[2]^2) +                   c[2]*d[2]*Log[1 + (wmax - d[2])^2/c[2]^2] -                   c[2]*d[2]*Log[1 + (wmax + d[2])^2/c[2]^2])/2 +                (2*wmax*c[3] +                   (ArcTan[(wmax - d[3])/c[3]] +                      ArcTan[(wmax + d[3])/c[3]])*                   (-wmax^2 - c[3]^2 + d[3]^2) +                   c[3]*d[3]*Log[1 + (wmax - d[3])^2/c[3]^2] -                   c[3]*d[3]*Log[1 + (wmax + d[3])^2/c[3]^2])/2 +                (2*wmax*c[4] +                   (ArcTan[(wmax - d[4])/c[4]] +                      ArcTan[(wmax + d[4])/c[4]])*                   (-wmax^2 - c[4]^2 + d[4]^2) +                   c[4]*d[4]*Log[1 + (wmax - d[4])^2/c[4]^2] -                   c[4]*d[4]*Log[1 + (wmax + d[4])^2/c[4]^2])/2))/wmax^3)^2,        {w, 0, wmax}])/wmax + 100*WO*    (-1 + ((a[2]^2 + b[2]^2)*(a[3]^2 + b[3]^2)*(a[4]^2 + b[4]^2)*          Sqrt[((a[1] - c[1])^2 + (b[1] - d[1])^2)*            ((a[1] - c[1])^2 + (b[1] + d[1])^2)*            ((a[1] - c[2])^2 + (b[1] - d[2])^2)*            ((a[1] - c[2])^2 + (b[1] + d[2])^2)*            ((a[1] - c[3])^2 + (b[1] - d[3])^2)*            ((a[1] - c[3])^2 + (b[1] + d[3])^2)*            ((a[1] - c[4])^2 + (b[1] - d[4])^2)*            ((a[1] - c[4])^2 + (b[1] + d[4])^2)]*          (b[1]*Cos[ArcTan[(b[1] - b[2])/(a[1] - a[2])] +                ArcTan[(b[1] + b[2])/(a[1] - a[2])] +                ArcTan[(b[1] - b[3])/(a[1] - a[3])] +                ArcTan[(b[1] + b[3])/(a[1] - a[3])] +                ArcTan[(b[1] - b[4])/(a[1] - a[4])] +                ArcTan[(b[1] + b[4])/(a[1] - a[4])] -                ArcTan[(b[1] - d[1])/(a[1] - c[1])] -                ArcTan[(b[1] + d[1])/(a[1] - c[1])] -                ArcTan[(b[1] - d[2])/(a[1] - c[2])] -                ArcTan[(b[1] + d[2])/(a[1] - c[2])] -                ArcTan[(b[1] - d[3])/(a[1] - c[3])] -                ArcTan[(b[1] + d[3])/(a[1] - c[3])] -                ArcTan[(b[1] - d[4])/(a[1] - c[4])] -                ArcTan[(b[1] + d[4])/(a[1] - c[4])]] +             a[1]*Sin[ArcTan[(b[1] - b[2])/(a[1] - a[2])] +                ArcTan[(b[1] + b[2])/(a[1] - a[2])] +                ArcTan[(b[1] - b[3])/(a[1] - a[3])] +                ArcTan[(b[1] + b[3])/(a[1] - a[3])] +                ArcTan[(b[1] - b[4])/(a[1] - a[4])] +                ArcTan[(b[1] + b[4])/(a[1] - a[4])] -                ArcTan[(b[1] - d[1])/(a[1] - c[1])] -                ArcTan[(b[1] + d[1])/(a[1] - c[1])] -                ArcTan[(b[1] - d[2])/(a[1] - c[2])] -                ArcTan[(b[1] + d[2])/(a[1] - c[2])] -                ArcTan[(b[1] - d[3])/(a[1] - c[3])] -                ArcTan[(b[1] + d[3])/(a[1] - c[3])] -                ArcTan[(b[1] - d[4])/(a[1] - c[4])] -                ArcTan[(b[1] + d[4])/(a[1] - c[4])]])*          (1 - E^(tpeak1*a[1])*             (Cos[tpeak1*b[1]] -                ((a[1] - ((a[1]^2 + b[1]^2)*                       Sin[ArcTan[(b[1] - b[2])/(a[1] - a[2])] +                          ArcTan[(b[1] + b[2])/(a[1] - a[2])] +                          ArcTan[(b[1] - b[3])/(a[1] - a[3])] +                          ArcTan[(b[1] + b[3])/(a[1] - a[3])] +                          ArcTan[(b[1] - b[4])/(a[1] - a[4])] +                          ArcTan[(b[1] + b[4])/(a[1] - a[4])] -                          ArcTan[(b[1] - d[1])/(a[1] - c[1])] -                          ArcTan[(b[1] + d[1])/(a[1] - c[1])] -                          ArcTan[(b[1] - d[2])/(a[1] - c[2])] -                          ArcTan[(b[1] + d[2])/(a[1] - c[2])] -                          ArcTan[(b[1] - d[3])/(a[1] - c[3])] -                          ArcTan[(b[1] + d[3])/(a[1] - c[3])] -                          ArcTan[(b[1] - d[4])/(a[1] - c[4])] -                          ArcTan[(b[1] + d[4])/(a[1] - c[4])]])/                     (b[1]*Cos[ArcTan[(b[1] - b[2])/(a[1] - a[2])] +                          ArcTan[(b[1] + b[2])/(a[1] - a[2])] +                          ArcTan[(b[1] - b[3])/(a[1] - a[3])] +                          ArcTan[(b[1] + b[3])/(a[1] - a[3])] +                          ArcTan[(b[1] - b[4])/(a[1] - a[4])] +                          ArcTan[(b[1] + b[4])/(a[1] - a[4])] -                          ArcTan[(b[1] - d[1])/(a[1] - c[1])] -                          ArcTan[(b[1] + d[1])/(a[1] - c[1])] -                          ArcTan[(b[1] - d[2])/(a[1] - c[2])] -                          ArcTan[(b[1] + d[2])/(a[1] - c[2])] -                          ArcTan[(b[1] - d[3])/(a[1] - c[3])] -                          ArcTan[(b[1] + d[3])/(a[1] - c[3])] -                          ArcTan[(b[1] - d[4])/(a[1] - c[4])] -                          ArcTan[(b[1] + d[4])/(a[1] - c[4])]] +                        a[1]*Sin[ArcTan[(b[1] - b[2])/(a[1] - a[2])] +                          ArcTan[(b[1] + b[2])/(a[1] - a[2])] +                          ArcTan[(b[1] - b[3])/(a[1] - a[3])] +                          ArcTan[(b[1] + b[3])/(a[1] - a[3])] +                          ArcTan[(b[1] - b[4])/(a[1] - a[4])] +                          ArcTan[(b[1] + b[4])/(a[1] - a[4])] -                          ArcTan[(b[1] - d[1])/(a[1] - c[1])] -                          ArcTan[(b[1] + d[1])/(a[1] - c[1])] -                          ArcTan[(b[1] - d[2])/(a[1] - c[2])] -                          ArcTan[(b[1] + d[2])/(a[1] - c[2])] -                          ArcTan[(b[1] - d[3])/(a[1] - c[3])] -                          ArcTan[(b[1] + d[3])/(a[1] - c[3])] -                          ArcTan[(b[1] - d[4])/(a[1] - c[4])] -                          ArcTan[(b[1] + d[4])/(a[1] - c[4])]]))*                  Sin[tpeak1*b[1]])/b[1])))/        (b[1]*Sqrt[((a[1] - a[2])^2 + (b[1] - b[2])^2)*            ((a[1] - a[2])^2 + (b[1] + b[2])^2)*            ((a[1] - a[3])^2 + (b[1] - b[3])^2)*            ((a[1] - a[3])^2 + (b[1] + b[3])^2)*            ((a[1] - a[4])^2 + (b[1] - b[4])^2)*            ((a[1] - a[4])^2 + (b[1] + b[4])^2)]*(c[1]^2 + d[1]^2)*          (c[2]^2 + d[2]^2)*(c[3]^2 + d[3]^2)*(c[4]^2 + d[4]^2)) +        ((a[1]^2 + b[1]^2)*(a[3]^2 + b[3]^2)*(a[4]^2 + b[4]^2)*          Sqrt[((a[2] - c[1])^2 + (b[2] - d[1])^2)*            ((a[2] - c[1])^2 + (b[2] + d[1])^2)*            ((a[2] - c[2])^2 + (b[2] - d[2])^2)*            ((a[2] - c[2])^2 + (b[2] + d[2])^2)*            ((a[2] - c[3])^2 + (b[2] - d[3])^2)*            ((a[2] - c[3])^2 + (b[2] + d[3])^2)*            ((a[2] - c[4])^2 + (b[2] - d[4])^2)*            ((a[2] - c[4])^2 + (b[2] + d[4])^2)]*          (b[2]*Cos[ArcTan[(-b[1] + b[2])/(-a[1] + a[2])] +                ArcTan[(b[1] + b[2])/(-a[1] + a[2])] +                ArcTan[(b[2] - b[3])/(a[2] - a[3])] +                ArcTan[(b[2] + b[3])/(a[2] - a[3])] +                ArcTan[(b[2] - b[4])/(a[2] - a[4])] +                ArcTan[(b[2] + b[4])/(a[2] - a[4])] -                ArcTan[(b[2] - d[1])/(a[2] - c[1])] -                ArcTan[(b[2] + d[1])/(a[2] - c[1])] -                ArcTan[(b[2] - d[2])/(a[2] - c[2])] -                ArcTan[(b[2] + d[2])/(a[2] - c[2])] -                ArcTan[(b[2] - d[3])/(a[2] - c[3])] -                ArcTan[(b[2] + d[3])/(a[2] - c[3])] -                ArcTan[(b[2] - d[4])/(a[2] - c[4])] -                ArcTan[(b[2] + d[4])/(a[2] - c[4])]] +             a[2]*Sin[ArcTan[(-b[1] + b[2])/(-a[1] + a[2])] +                ArcTan[(b[1] + b[2])/(-a[1] + a[2])] +                ArcTan[(b[2] - b[3])/(a[2] - a[3])] +                ArcTan[(b[2] + b[3])/(a[2] - a[3])] +                ArcTan[(b[2] - b[4])/(a[2] - a[4])] +                ArcTan[(b[2] + b[4])/(a[2] - a[4])] -                ArcTan[(b[2] - d[1])/(a[2] - c[1])] -                ArcTan[(b[2] + d[1])/(a[2] - c[1])] -                ArcTan[(b[2] - d[2])/(a[2] - c[2])] -                ArcTan[(b[2] + d[2])/(a[2] - c[2])] -                ArcTan[(b[2] - d[3])/(a[2] - c[3])] -                ArcTan[(b[2] + d[3])/(a[2] - c[3])] -                ArcTan[(b[2] - d[4])/(a[2] - c[4])] -                ArcTan[(b[2] + d[4])/(a[2] - c[4])]])*          (1 - E^(tpeak1*a[2])*             (Cos[tpeak1*b[2]] - 

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