DSP matlab codes for Chebyshev discrete filters type

[Marc02x4]

Hey I was wondering if anyone has matlab codes for chebyshev discrete filters type I and II and ellitiptic discrete filter also... examples would be very helpfull... thanx

 

[m_llaa]

filter signal matlab cheby1

it is easy
use fdatool in matlab
just write fdatool
but if u need the code i think matlab has some function do it
cheby1() , cheby2()
see matlab help for detail on these functions

 

[gowthamn]

cheby1 matlab to c

Hi,

Type 'help cheby1' on the command window u will see the command usage along with an example.

Regards
Gowtham

 

[sanputtu]

matlab cheby1

I am just copying from MATLAB help file so that it'll help you.

cheby1 designs lowpass, bandpass, highpass, and bandstop digital and analog Chebyshev Type I filters. Chebyshev Type I filters are equiripple in the passband and monotonic in the stopband. Type I filters roll off faster than type II filters, but at the expense of greater deviation from unity in the passband.

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

n order
Wn passband edge frequency
Rp dB of peak-to-peak ripple in the passband



If Wn is a two-element vector, Wn = [w1 w2], cheby1 returns an order 2*n bandpass filter with passband w1 <w < w2.

[b,a] = cheby1(n,Rp,Wn,'ftype') designs a highpass , lowpass, or bandstop filter, where the string 'ftype' is one of the following 'high' for a highpass digital filter with normalized passband edge frequency Wn 'low' for a lowpass digital filter with normalized passband edge frequency Wn 'stop' for an order 2*n bandstop digital filter if Wn is a two-element vector, Wn = [w1 w2]. The stopband is w1 < w < w2.

Apart from this you should see the help files of MATLAB.

Bye

Added after 5 minutes:

You can download this attachment for C code and see the implementation