***** STARTING DESIGN ******* Sampling frequency=20000.000000 Hz freq at passband=2000.000000 Hz freq at stopband=3000.000000 Hz db at passband=-1.000000 db at stopband=-15.000000 Doing impulse invariance method T=1.000000 n=5.885783, rounded to 6 Gamma C =0.703205 POLES Of H(s) poles_of_hs = -0.182002858631059 + 0.679243915533887i -0.497241056902828 + 0.497241056902828i -0.679243915533887 + 0.182002858631059i -0.679243915533887 - 0.182002858631059i -0.497241056902828 - 0.497241056902828i -0.182002858631059 - 0.679243915533887i k=1.209183e-001 H(s)= Warning: Transfer function has complex coefficients. > In tf.tf at 246 In nma_filter at 92 Transfer function: (0.1209-1.041e-016i) ---------------------------------------------------------------------------- s^6 + (2.717-4.441e-016i) s^5 + (3.691-1.998e-015i) s^4 + (3.179 -2.22e-015i) s^3 + (1.825-1.554e-015i) s^2 + (0.6644-4.996e-016i) s + (0.1209-1.041e-016i) POLES Of H(z) hzp = 0.534553736986506 + 0.290115961427623i 0.534553736986506 - 0.290115961427623i 0.648579932539211 + 0.523670977796743i 0.648579932539211 - 0.523670977796743i 0.498626135868541 - 0.0917668874413562i 0.498626135868543 + 0.0917668874413561i H(z)= Warning: Transfer function has complex coefficients. > In tf.tf at 246 In nma_filter at 107 Transfer function: -(0.9938-0.8577i) s^4 - (0.22-0.703i) s^3 + (1.377+1.095i) s^2 - (0.6574 +2.854i) s - (0.9146-1.114i) -------------------------------------------------------------------------- -(0.6979+1.411i) s^4 + (0.6009-0.8998i) s^3 - (0.03618-0.9428i) s^2 + (0.1901+0.7751i) s - (0.6018+0.246i) ============================================================= ***** STARTING DESIGN ******* Sampling frequency=20000.000000 Hz freq at passband=2000.000000 Hz freq at stopband=3000.000000 Hz db at passband=-1.000000 db at stopband=-15.000000 Doing Bilinear method T=0.000050 n=5.304446, rounded to 6 Gamma C =15324.588619 POLES Of H(s) poles_of_hs = -3966.29539304108 + 14802.4159246557i -10836.1205316146 + 10836.1205316146i -14802.4159246557 + 3966.29539304109i -14802.4159246557 - 3966.29539304109i -10836.1205316146 - 10836.1205316146i -3966.29539304108 - 14802.4159246557i k=1.295188e+025 H(s)= Warning: Transfer function has complex coefficients. > In tf.tf at 246 In nma_filter at 90 Transfer function: (1.295e025-1.288e010i) -------------------------------------------------------------------------- s^6 + (5.921e004-7.276e-012i) s^5 + (1.753e009-3.576e-007i) s^4 + (3.29e013-0.01172i) s^3 + (4.117e017-224i) s^2 + (3.265e021 -2.49e006i) s + (1.295e025-1.288e010i) POLES Of H(z) hzp = 0.498385402712059 + 0.299971817994199i 0.49838540271206 - 0.299971817994199i 0.467705977269569 - 0.0939883945094121i 0.605559876472429 + 0.553064536118524i 0.467705977269569 + 0.0939883945094127i 0.60555987647243 - 0.553064536118524i H(z)= Warning: Transfer function has complex coefficients. > In tf.tf at 246 In nma_filter at 107 Transfer function: -(0.5053-1.947i) s^4 + (0.02086-1.348i) s^3 - (0.9771+0.04836i) s^2 + (0.01411+0.02526i) s - (0.3816-0.3931i) -------------------------------------------------------------------------- (0.1988-1.53i) s^4 + (0.6374+0.9373i) s^3 - (1.064+0.2778i) s^2 - (0.7076-0.6148i) s + (0.4667-0.6282i) ================================================================= Sampling frequency=10000.000000 Hz freq at passband=1000.000000 Hz freq at stopband=2000.000000 Hz db at passband=-3.000000 db at stopband=-10.000000 Doing impulse invariance method T=1.000000 n=1.588388, rounded to 2 Gamma C =0.629065 POLES Of H(s) poles_of_hs = -0.444816082052343 + 0.444816082052343i -0.444816082052343 - 0.444816082052343i k=3.957227e-001 H(s)= Warning: Transfer function has complex coefficients. > In tf.tf at 246 In nma_filter at 92 Transfer function: (0.3957-8.327e-017i) --------------------------------------------------- s^2 + (0.8896-5.551e-017i) s + (0.3957-8.327e-017i) POLES Of H(z) hzp = 0.578571949761589 + 0.275792192443573i 0.578571949761589 - 0.275792192443573i H(z)= Warning: Transfer function has complex coefficients. > In tf.tf at 246 In nma_filter at 107 Transfer function: (-6.9e-016+1.253i) ====================================== Sampling frequency=10000.000000 Hz freq at passband=1000.000000 Hz freq at stopband=2000.000000 Hz db at passband=-3.000000 db at stopband=-10.000000 Doing Bilinear method T=0.000100 n=1.368163, rounded to 2 Gamma C =8389.390482 POLES Of H(s) poles_of_hs = -5932.19490014964 + 5932.19490014964i -5932.19490014964 - 5932.19490014964i k=7.038187e+007 H(s)= Warning: Transfer function has complex coefficients. > In tf.tf at 246 In nma_filter at 90 Transfer function: (7.038e007-2.235e-008i) --------------------------------------------------------- s^2 + (1.186e004-9.095e-013i) s + (7.038e007-2.235e-008i) POLES Of H(z) hzp = 0.458140439181504 - 0.308891358305335i 0.458140439181504 + 0.308891358305335i H(z)= Warning: Transfer function has complex coefficients. > In tf.tf at 246 In nma_filter at 107 Transfer function: (2.058e-016-1.78i) EDU>>