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Methods available for designing filter from specification object


M = designmethods(D)
M = designmethods(D,'default')
M = designmethods(D,TYPE)
M = designmethods(D,'full')


M = designmethods(D) returns the available design methods for the filter specification object, D.

M = designmethods(D,'default') returns the default design method for the filter specification object D.

M = designmethods(D,TYPE) returns the TYPE design methods that apply to D. TYPE can be either 'FIR' or 'IIR'.

M = designmethods(D,'full') returns the full name for each of the available design methods. For example, designmethods with the 'full' argument returns Butterworth for the butter method.


collapse all

Construct a lowpass filter specification object and determine the valid design methods.

D = fdesign.lowpass('Fp,Fst,Ap,Ast',500,600,0.5,60,1e4);
M = designmethods(D)
M = 8x1 cell array
    {'butter'    }
    {'cheby1'    }
    {'cheby2'    }
    {'ellip'     }
    {'ifir'      }
    {'kaiserwin' }

Introduced in R2009a

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