Elliptic filter design
[
returns
the transfer function coefficients of an b,a
] = ellip(n
,Rp
,Rs
,Wp
)n
th-order
lowpass digital elliptic filter with normalized passband edge frequency Wp
.
The resulting filter has Rp
decibels of peak-to-peak
passband ripple and Rs
decibels of stopband attenuation
down from the peak passband value.
Note: See Limitations for information about numerical issues that affect forming the transfer function. |
[
designs
a lowpass, highpass, bandpass, or bandstop digital elliptic filter
and returns its zeros, poles, and gain. This syntax can include any
of the input arguments in previous syntaxes.z,p,k
] = ellip(___)