Design a low pass IIR filter to meet the following specification.provide design stage

[Faazil Fairooz]

Design a low pass IIR filter to meet the following specification

Sampling frequency 15KHZ
pass band frequency 0-3KHz
transition width 450Hz
pass band ripple 0.5dB
stop band attenuation 45dB

Obtain the filter frequency response

any body please help me i am stuck in this question, its for my final year Coursework

 

[FvM]

My filter tool says it can be implemented as 13th order Chebyshev I or 7th order Elliptic filter.

The question suggests that you are wanted to use Matlab to solv ethe exercise problem, "designing" the filter in Matlab is just a function call if I remember right.

 

[Faazil Fairooz]

Thnx for the reply,
its an elliptic filter,and we are required to show the matlab simulation also with the design steps
can you help me in please

 

[FvM]

I'm not doing filter design in Matlab.

 

[Faazil Fairooz]

Then can i get the mathematical working i can build up the coda later