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MATLAB數(shù)字信號處理85個實(shí)用案例精講.入門到進(jìn)階+源代碼(無需密碼).rar
代碼片段和文件信息
function?[HrwPLtype]?=?ampl_ress(h)
%
%?function?[HrwPL]?=?ampl_ress(h)
%?Computes?Amplitude?response?Hr(w)?and?its?polynomial?P?of?order?L
%?given?a?linear-phase?FIR?filter?impulse?response?h.
%?The?type?of?filter?is?determined?automatically?by?the?suroutine.
%
%?Hr?=?Amplitude?Response
%?w?=?Frequence?between?[0?pi]?over?which?Hr?is?computed
%?P?=?Polynomial?coefficients
%?L?=?Order?of?P
%?h?=?Linear?Phase?filter?impulse?response
%
M?=?length(h);
if?rem(M2)==1
???if?all(abs(h(1:(M-1)/2)-h(M:-1:(M+3)/2))<1e-8)?
???????[HrwPL]?=?hr_type1(h);?type=1;
???elseif?all(abs(h(1:(M-1)/2)+h(M:-1:(M+3)/2))<1e-8)?&?h((M+1)/2)==0?
???????[HrwPL]?=?hr_type3(h);?type=3;
???else?disp(‘not?a?linear-phase?filter?check?h‘)?return
???end
else
???if?all(abs(h(1:M/2)-h(M:-1:M/2+1))<1e-8)
???????[HrwPL]?=?hr_type2(h);?type=2;
???elseif?all(abs(h(1:M/2)+h(M:-1:M/2+1))<1e-8)?
???????[HrwPL]?=?hr_type4(h);?type=4;
???????else?disp(‘not?a?linear-phase?filter?check?h‘)?return?
???end
end
?屬性????????????大小?????日期????時間???名稱
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............此處省略188個文件信息
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