ARRAY: Passband corner frequency. wp, the cutoff frequency, has a value between 0 and 1, where 1 corresponds to half the sampling frequency (the Nyquist frequency).

ARRAY: Stopband corner frequency. ws is in the same units as wp; it has a value between 0 and 1, where 1 corresponds to half the sampling frequency (the Nyquist frequency).

REAL: Passband ripple, in decibels. This value is the maximum permissible passband loss in decibels. The passband is 0<w<1p.

REAL: Stopband attenuation, in decibels. This value is the number of decibels the stopband is down from the passband. The stopband is Ws<w<1.

A Boolean value.

Function

buttord_frequency ({0.2, 0.4}, {0.1, 0.5}, 3.0, 30.0, 1)

Result

{0.19151, 04081}