www.gusucode.com > signal 工具箱matlab源码程序 > signal/@dfilt/@dtffir/tosysobj.m
function Hs = tosysobj(this,returnSysObj) %TOSYSOBJ Convert dfilt FIR structure to System object % Copyright 2011-2012 The MathWorks, Inc. if ~returnSysObj % If returnSysObj is false, then it means that we want to know if the % System object conversion is supported for the class at hand. Return a % flag as an output instead of returning the filter System object. Hs = true; return; end % FIR structures are mapped to an FIRFilter System object Hs = dsp.FIRFilter; % Call blockparams method to get the structure s = blockparams(this,'off'); Hs.Structure = s.FilterStructure; % Make sure the System object coefficients are the refference coefficients refFilter = reffilter(this); Hs.NumeratorSource = 'Property'; Hs.Numerator = refFilter.Numerator; if this.PersistentMemory IC = getinitialconditions(this); if ~isempty(IC) Hs.InitialConditions = IC; end end if strcmpi(this.Arithmetic, 'fixed') Q = get_filterquantizer(this); setsysobjfixedpoint(Q,Hs) end