Determination of Poles of Butterworth Filters

Inputparameters are degree n and passband attenuation in dB.

If you do not know what values are adequate, go to the page for the computation of the degrees (click here to open an additional page).

degree n of filter (here n ≤ 10)
dB (maximal attenuation in pass band)

Determination of attenuation of the filter at certain circlefrequencies ω

ω =