https://www.mathworks.com/help/dsp/ref/design.html
design - Apply design method to filter specification object - MATLAB
This MATLAB function uses the filter specification object, designSpecs, to generate a filter System object, filt.
apply methodfilter specificationdesignobjectmatlab
https://www.mathworks.com/help/dsp/ref/fdesign.ciccomp.html
fdesign.ciccomp - CIC compensator filter specification object - MATLAB
This MATLAB function constructs a CIC compensator specifications object d, applying default values for the properties Fpass, Fstop, Apass, and Astop.
filter specificationfdesignciccompensatorobject
https://www.mathworks.com/help/dsp/ref/fdesign.highpass.html
fdesign.highpass - Highpass filter specification object - MATLAB
This MATLAB function constructs a highpass filter specification object D, applying default values for the specification, 'Fst,Fp,Ast,Ap'.
highpass filterfdesignspecificationobjectmatlab
https://www.mathworks.com/help/dsp/ref/cheby1.html
cheby1 - Chebyshev Type I filter using specification object - MATLAB
This MATLAB function designs a type I Chebyshev IIR digital filter using specifications in the designSpecs object.
type ichebyshevfilterusingspecification
https://www.mathworks.com/help/dsp/ref/freqsamp.html
freqsamp - Real or complex frequency-sampled FIR filter from specification object - MATLAB
This MATLAB function designs a frequency-sampled filter specified by the filter specifications object d.
complex frequency