cheb1mag(1)

NAME
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.

AUTHOR
F. D.