Question

Design of iir chebyshev to find order of filter matlab code

Answer 1

Answer:

Syntax

[b,a] = cheby1(n,Rp,Wp)

[b,a] = cheby1(n,Rp,Wp,ftype)

[z,p,k] = cheby1(___)

[A,B,C,D] = cheby1(___)

[___] = cheby1(___,'s')

Description

example

[b,a] = cheby1(n,Rp,Wp) returns the transfer function coefficients of an nth-order lowpass digital Chebyshev Type I filter with normalized passband edge frequency Wp and Rp decibels of peak-to-peak passband ripple.

example

[b,a] = cheby1(n,Rp,Wp,ftype) designs a lowpass, highpass, bandpass, or bandstop Chebyshev Type I filter, depending on the value of ftype and the number of elements of Wp. The resulting bandpass and bandstop designs are of order 2n.

Note: See Limitations for information about numerical issues that affect forming the transfer function.

example

[z,p,k] = cheby1(___) designs a lowpass, highpass, bandpass, or bandstop digital Chebyshev Type I filter and returns its zeros, poles, and gain. This syntax can include any of the input arguments in previous syntaxes.

example

[A,B,C,D] = cheby1(___) designs a lowpass, highpass, bandpass, or bandstop digital Chebyshev Type I filter and returns the matrices that specify its state-space representation.

example

[___] = cheby1(___,'s') designs a lowpass, highpass, bandpass, or bandstop analog Chebyshev Type I filter with passband edge angular frequency Wp and Rp decibels of passband ripple.