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Справка Scilab >> Signal Processing > filters > cheb1mag

cheb1mag

response of Chebyshev type 1 filter

Calling Sequence

[h2]=cheb1mag(n,omegac,epsilon,sample)

Arguments

n

integer : filter order

omegac

real : cut-off frequency

epsilon

real : ripple in pass band

sample

vector of frequencies where cheb1mag is evaluated

h2

Chebyshev I filter values at sample points

Description

Square magnitude response of a type 1 Chebyshev filter.

omegac=passband edge.

epsilonsuch that 1/(1+epsilon^2)=passband ripple.

samplevector of frequencies where the square magnitude is desired.

Examples

//Chebyshev; ripple in the passband
n=13;epsilon=0.2;omegac=3;samples=0:0.05:10;
h=cheb1mag(n,omegac,epsilon,samples);
plot2d(samples,h)
xtitle('','frequencies','magnitude')

See Also

  • buttmag — Power transmission of a Butterworth filter
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Last updated:
Thu Oct 02 14:01:06 CEST 2014