Examples
[z, p, g] = buttap (5) z = [](0x0) p = -0.30902 + 0.95106i -0.80902 + 0.58779i -1.00000 + 0.00000i -0.80902 - 0.58779i -0.30902 - 0.95106i g = 1 |  |  |
Design a lowpass analog Butterworth filter.
z = buttap (n) [z, p] = buttap (n) [z, p, g] = buttap (n)
Filter Order
Zeros
Poles
Gain
This is an Octave function. It designs a lowpass analog Butterworth filter of nth order.
[z, p, g] = buttap (5) z = [](0x0) p = -0.30902 + 0.95106i -0.80902 + 0.58779i -1.00000 + 0.00000i -0.80902 - 0.58779i -0.30902 - 0.95106i g = 1 | | |