homomorphic filter by using matlab

is there any reference to design a filter using MATLAB? is there any design example of filter design using MATLAB. please help

specify which type of filter you want todesign,
am giving some methods :kaiser window method
filter design using Eigen Value approach

I'm doing a tunable combline filter. with six resonators. I'm can't do any optimisation in cst it's too time demanding.

you can try simulink

the filter that going to design is homomorphic filter. is there any guidelines in order to degin this filter using matlab?