ellf.ans

巴特沃斯、切比雪夫I和椭圆滤波器设计的源程序！非常难得！ 简洁的C语言编写

q. f.
z**2    1.0000000000000E+000
z**1   -5.9456423999443E-001
f0  1.31273939E+003  gain  0.0000E+000  DC gain  1.4054E+000

pole    -4.6221493898600E-001    0.0000000000000E+000
q. f.
z**2    0.0000000000000E+000
z**1    4.6221493898600E-001
f0  3.25000000E+003  gain  1.8595E+000  DC gain  6.8389E-001

zero     1.0000000000000E+000    0.0000000000000E+000
q. f.
z**2    0.0000000000000E+000
z**1   -1.0000000000000E+000
f0  3.25000000E+003  gain  2.0000E+000  DC gain  0.0000E+000

       0.0     -999.99
     162.5      -50.82
     325.0      -45.10
     487.5      -42.12
     650.0      -40.51
     812.5      -40.00
     975.0      -40.85
    1137.5      -44.32
    1300.0      -65.33
    1462.5      -43.23
    1625.0      -41.27
    1787.5      -26.07
    1950.0       -3.38
    2112.5       -0.28
    2275.0       -0.06
    2437.5       -0.05
    2600.0       -0.24
    2762.5       -0.30
    2925.0       -0.20
    3087.5       -0.06
    3250.0       -0.00
Filter kind:
1 Butterworth
2 Chebyshev
3 Elliptic
 ? 3
Filter shape:
1 low pass
2 band pass
3 high pass
4 band stop
 ? 2
Order of filter = 5.000000000E+000 ? 5.000000000E+000
Passband ripple, db = 3.000000000E-001 ? 1.000000000E-001
Sampling frequency = 6.500000000E+003 ? 1.000000000E+004
Passband edge = 2.000000000E+003 ? 3.000000000E+003
Other passband edge = 0.000000000E+000 ? 4.000000000E+003
Stop band edge or -(db down) = -4.000000000E+001 ? -6.000000000E+001
pass band 3.000000000E+003 4.000000000E+003
stop band 2.427504685E+003 4.293859882E+003
dbdown 6.000000000E+001
theta 2.928455092E+001, rho 1.508733875E-001
consistency check: n= 5.00000000000000E+000
phi 1.4193446e+000 m 9.9999998e-001 u 2.5787213e+000
consistency check: sn/cn = 6.552203217E+000 = 6.552203217E+000 = 1/eps
s plane poles:
-1.401852486E-001 1.073913612E+000
-4.295398784E-001 7.187049914E-001
-5.882668003E-001 0.000000000E+000
s plane zeros:
0.000000000E+000 2.136255275E+000
0.000000000E+000 3.330206043E+000
order = 10
constant gain factor    5.1012667976791E-003
z plane Denominator      Numerator
 0  1.000000000E+000  5.101266798E-003
 1  5.247140923E+000  1.431997289E-002
 2  1.467423666E+001  1.620601912E-002
 3  2.729767978E+001  1.470363942E-002
 4  3.710041717E+001  1.310289125E-002
 5  3.808272505E+001 -9.061670166E-018
 6  2.990609151E+001 -1.310289125E-002
 7  1.772095469E+001 -1.470363942E-002
 8  7.661820766E+000 -1.620601912E-002
 9  2.200281544E+000 -1.431997289E-002
10  3.390826882E-001 -5.101266798E-003
poles and zeros with corresponding quadratic factors
pole    -7.9453170111869E-001    5.5651374094174E-001
q. f.
z**2    9.4098816793954E-001
z**1    1.5890634022374E+000
f0  4.02754036E+003  gain  2.9531E+001  DC gain  2.8328E-001

zero    -9.0833759042758E-001    4.1823775752103E-001
q. f.
z**2    1.0000000000000E+000
z**1    1.8166751808552E+000
f0  4.31323945E+003  gain  0.0000E+000  DC gain  3.8167E+000

pole    -2.6920937064690E-001    9.1152076365692E-001
q. f.
z**2    9.0334378782180E-001
z**1    5.3841874129379E-001
f0  2.95705629E+003  gain  1.0787E+001  DC gain  4.0954E-001

zero     7.4165791504476E-002    9.9724592522131E-001
q. f.
z**2    1.0000000000000E+000
z**1   -1.4833158300895E-001
f0  2.38185299E+003  gain  0.0000E+000  DC gain  1.8517E+000

pole    -6.9404591991422E-001    5.6781876432002E-001
q. f.
z**2    8.0411788806348E-001
z**1    1.3880918398284E+000
f0  3.90867840E+003  gain  8.0444E+000  DC gain  3.1326E-001

zero    -9.5136767633314E-001    3.0805769659025E-001
q. f.
z**2    1.0000000000000E+000
z**1    1.9027353526663E+000
f0  4.50160508E+003  gain  1.3681E-016  DC gain  3.9027E+000

pole    -3.4692400409293E-001    7.8113573664674E-001
q. f.
z**2    7.3052930368251E-001
z**1    6.9384800818585E-001
f0  3.16520366E+003  gain  4.0581E+000  DC gain  4.1248E-001

zero     3.8196919950605E-001    9.2417505410431E-001
q. f.
z**2    1.0000000000000E+000
z**1   -7.6393839901211E-001
f0  1.87623020E+003  gain  4.1042E-016  DC gain  1.2361E+000

pole    -5.1885946548945E-001    6.4019477986397E-001
q. f.
z**2    6.7906450109307E-001
z**1    1.0377189309789E+000
f0  3.58399368E+003  gain  3.9986E+000  DC gain  3.6808E-001

zero    -1.0000000000000E+000    0.0000000000000E+000
q. f.
z**2    0.0000000000000E+000
z**1    1.0000000000000E+000
f0  5.00000000E+003  gain  0.0000E+000  DC gain  2.0000E+000

zero     1.0000000000000E+000    0.0000000000000E+000
q. f.
z**2    0.0000000000000E+000
z**1   -1.0000000000000E+000
f0  5.00000000E+003  gain  2.0000E+000  DC gain  0.0000E+000

       0.0     -999.99
     250.0      -70.51
     500.0      -64.79
     750.0      -61.84
    1000.0      -60.32
    1250.0      -60.08
    1500.0      -61.71
    1750.0      -68.81
    2000.0      -67.46
    2250.0      -60.15
    2500.0      -47.84
    2750.0      -22.34
    3000.0       -0.10
    3250.0       -0.01
    3500.0       -0.03
    3750.0       -0.09
    4000.0       -0.10
    4250.0      -44.58
    4500.0      -96.21
    4750.0      -60.24
    5000.0     -360.04
Filter kind:
1 Butterworth
2 Chebyshev
3 Elliptic
 ? 3
Filter shape:
1 low pass
2 band pass
3 high pass
4 band stop
 ? 4
Order of filter = 5.000000000E+000 ? 4.000000000E+000
Passband ripple, db = 1.000000000E-001 ? 2.000000000E+000
Sampling frequency = 1.000000000E+004 ? 1.000000000E+004
Passband edge = 4.000000000E+003 ? 2.000000000E+003
Other passband edge = 3.000000000E+003 ? 1.000000000E+003
Stop band edge or -(db down) = -6.000000000E+001 ? 1.100000000E+003
pass band 1.000000000E+003 2.000000000E+003
stop band 1.100000000E+003 1.847389855E+003
dbdown 3.814576900E+001
theta 4.741021935E+001, rho 6.074888110E-001
consistency check: n= 4.00000000000000E+000
phi 9.1790097e-001 m 9.9991035e-001 u 1.0830283e+000
consistency check: sn/cn = 1.307560272E+000 = 1.307560272E+000 = 1/eps
s plane poles:
-7.629395032E-002 1.019225538E+000
-9.059644940E-001 1.555219890E+000
s plane zeros:
0.000000000E+000 6.973551594E-001
0.000000000E+000 3.293237683E-001
order = 8
constant gain factor    3.7718842389567E-001
z plane Denominator      Numerator
 0  1.000000000E+000  3.771884239E-001
 1 -3.841560065E+000 -1.808831270E+000
 2  7.944378325E+000  4.703696584E+000
 3 -1.092509780E+001 -7.885778295E+000
 4  1.092299936E+001  9.348255387E+000
 5 -8.005714450E+000 -7.885778295E+000
 6  4.337495938E+000  4.703696584E+000
 7 -1.637208366E+000 -1.808831270E+000
 8  3.567931379E-001  3.771884239E-001
poles and zeros with corresponding quadratic factors
pole     2.9407459618423E-001    9.2715450482388E-001
q. f.
z**2    9.4609534393613E-001
z**1   -5.8814919236845E-001
f0  2.01116747E+003  gain  1.9462E+001  DC gain  7.3641E-001

zero     4.1152532156630E-001    9.1139832658929E-001
q. f.
z**2    1.0000000000000E+000
z**1   -8.2305064313259E-001
f0  1.82498086E+003  gain  0.0000E+000  DC gain  1.1769E+000

pole     7.9804376537115E-001    5.7423032291335E-001
q. f.
z**2    9.6661431520093E-001
z**1   -1.5960875307423E+000
f0  9.92689037E+002  gain  5.1280E+001  DC gain  2.6989E+000

zero     7.6418128798036E-001    6.4500151868091E-001
q. f.
z**2    1.0000000000000E+000
z**1   -1.5283625759607E+000
f0  1.11571637E+003  gain  0.0000E+000  DC gain  4.7164E-001

pole     6.7674116211170E-002    7.2342080404399E-001
q. f.
z**2    5.2791744572862E-001
z**1   -1.3534823242234E-001
f0  2.35154677E+003  gain  2.1273E+000  DC gain  7.1810E-001

zero     5.2710195809896E-001    8.4980205093200E-001
q. f.
z**2    1.0000000000000E+000
z**1   -1.0542039161979E+000
f0  1.61639294E+003  gain  0.0000E+000  DC gain  9.4580E-001

pole     7.6098755486526E-001    3.9991051838087E-001
q. f.
z**2    7.3903048137146E-001
z**1   -1.5219751097305E+000
f0  7.70072445E+002  gain  8.1536E+000  DC gain  4.6071E+000

zero     6.9497348934759E-001    7.1903536012079E-001
q. f.
z**2    1.0000000000000E+000
z**1   -1.3899469786952E+000
f0  1.27708043E+003  gain  0.0000E+000  DC gain  6.1005E-001

       0.0       -2.00
     250.0       -1.67
     500.0       -0.63
     750.0       -0.34
    1000.0       -2.00
    1250.0      -48.10
    1500.0      -39.39
    1750.0      -38.15
    2000.0       -2.00
    2250.0       -1.69
    2500.0       -0.24
    2750.0       -0.04
    3000.0       -0.42
    3250.0       -0.86
    3500.0       -1.22
    3750.0       -1.49
    4000.0       -1.69
    4250.0       -1.83
    4500.0       -1.93
    4750.0       -1.98
    5000.0       -2.00
Filter kind:
1 Butterworth
2 Chebyshev
3 Elliptic
 ? 0