diff options
Diffstat (limited to 'macros/ellip.sci')
| -rw-r--r-- | macros/ellip.sci | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/macros/ellip.sci b/macros/ellip.sci index 1dc8435..69463f2 100644 --- a/macros/ellip.sci +++ b/macros/ellip.sci @@ -11,7 +11,6 @@ // Email: toolbox@scilab.in function [a, b, c, d] = ellip (n, rp, rs, w, varargin) //Elliptic or Cauer filter design with rp dB of passband ripple and rs dB of stopband attenuation. - //Calling Sequence //[b, a] = ellip (n, rp, rs, wp) //[b, a] = ellip (n, rp, rs, wp, "high") @@ -19,7 +18,6 @@ function [a, b, c, d] = ellip (n, rp, rs, w, varargin) //[b, a] = ellip (n, rp, rs, [wl, wh], "stop") //[z, p, g] = ellip (…) //[…] = ellip (…, "s") - //Parameters //n: positive integer value (order of filter) //rp: non negative scalar value (passband ripple) @@ -27,14 +25,12 @@ function [a, b, c, d] = ellip (n, rp, rs, w, varargin) //wp: positive real value, // 1).Normalised digital passband edge(s) for digital filter, in the range [0, 1] {dimensionless} // 2).Analog passband edge(s) for analog filter, in the range [0, Inf] {rad/sec} - //Description //This function generates an elliptic or Cauer filter with rp dB of passband ripple and rs dB of stopband attenuation. //[b, a] = ellip(n, Rp, Rs, Wp) indicates low pass filter with order n, Rp decibels of ripple in the passband and a stopband Rs decibels down and cutoff of pi*Wp radians. If the fifth argument is high, then the filter is a high pass filter. //[b, a] = ellip(n, Rp, Rs, [Wl, Wh]) indictaes band pass filter with band pass edges pi*Wl and pi*Wh. If the fifth argument is stop, the filter is a band reject filter. //[z, p, g] = ellip(...) returns filter as zero-pole-gain. //[...] = ellip(...,’s’) returns a Laplace space filter, wp can be larger than 1. - //Examples //[b, a]=ellip(2, 3, 40, [0.3,0.4]) //Output : @@ -60,6 +56,7 @@ function [a, b, c, d] = ellip (n, rp, rs, w, varargin) // 0.0202774 // Dependencies // ellipap sftrans bilinear zp2tf + funcprot(0); [nargout nargin] = argn(); |