%------begin?computing?the?Least?Square?Estimate?of?intensity?coefficients
frequency=[20;200;2000;20000];
timeIntvl=0:0.025:24.975;
timeIntvl=timeIntvl*（10^-3）;??%?transform?the?ms?unit?of?time?into?s?unit?
ctrlVarMatrix=sin（2*pi*（frequency*timeIntvl））;???%?compute?the?matrix?of?the?control?variables
fid=fopen（‘observationsOfSample.txt‘‘r‘）;
obstnVector_Y=fscanf（fid‘%f‘）;?%?read?observations?of?sample?from?file
fclose（fid）;
obstnVector_Y=obstnVector_Y*（10^-3）;??%?transform?the?mV?unit?of?voice?into?V?unit
factorLSE1=ctrlVarMatrix*transpose（ctrlVarMatrix）;
if（rank（factorLSE1）????factorLSE2=inv（factorLSE1+eye（44）*（10^-7））;??%?modify?the?factorLSE1:add?up?factorLSE1?and?a?unit?matrix?that?multiled?by?a?tiny?value??
else
????factorLSE2=inv（factorLSE1）;??%?compute?the?generalized?inverse?matrix?of?factorLSE1?
end
factorLSE=factorLSE2*ctrlVarMatrix*obstnVector_Y;??%?compute?the?Least?Square?Estimate?of?intensity?coefficients???
%------end?computing?the?Least?Square?Estimate?of?intensity?coefficients
%------begin?computing?the?Least?Square?Estimate?of?variance
Qe=0;
for?i=1:size（obstnVector_Y1）
????Qe=Qe+（obstnVector_Y（i）-（transpose（ctrlVarMatrix（:i））*factorLSE））^2;
end
varianceLSE=Qe/（size（obstnVector_Y1）-size（frequency1）-1）;
%------end?computing?the?Least?Square?Estimate?of?variance
%------output?the?result?of?Least?Square?Estimate
disp（[‘the?LSE?of?factors?from?1?to?‘num2str（size（factorLSE1））‘?as?follow?:?‘]）
disp（vpa（factorLSE4））
disp（‘the?LSE?of?variance?as?follow?:?‘）
disp（vpa（varianceLSE4））
plot（timeIntvlobstnVector_Y）

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
-----------?---------??----------?-----??----

?????文件???????1611??2008-12-21?19:58??LSETest.m

-----------?---------??----------?-----??----

?????????????????1611????????????????????1