cheb1mag

cheb1mag

cheb1mag — response of Chebyshev type 1 filter

Calling sequence

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

Parameters

`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.

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

sample: vector of frequencies where the square magnitude is desired.

Examples



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

See also

buttmag