function?imf?=?emd（x）
%?Empiricial?Mode?Decomposition?（Hilbert-Huang?Transform）
%?imf?=?emd（x）
%?Func?:?findpeaks

x???=?transpose（x（:））;
imf?=?[];
while?~ismonotonic（x）
???x1?=?x;
???sd?=?Inf;
???while?（sd?>?0.1）?|?~isimf（x1）
??????s1?=?getspline（x1）;
??????s2?=?-getspline（-x1）;
??????x2?=?x1-（s1+s2）/2;
??????
??????sd?=?sum（（x1-x2）.^2）/sum（x1.^2）;
??????x1?=?x2;
???end
???
???imf{end+1}?=?x1;
???x??????????=?x-x1;
end
imf{end+1}?=?x;

%?FUNCTIONS

function?u?=?ismonotonic（x）

u1?=?length（findpeaks（x））*length（findpeaks（-x））;
if?u1?>?0?u?=?0;
else??????u?=?1;?end

function?u?=?isimf（x）

N??=?length（x）;
u1?=?sum（x（1:N-1）.*x（2:N）?u2?=?length（findpeaks（x））+length（findpeaks（-x））;
if?abs（u1-u2）?>?1?u?=?0;
else??????????????u?=?1;?end

function?s?=?getspline（x）

N?=?length（x）;
p?=?findpeaks（x）;
s?=?spline（[0?p?N+1][0?x（p）?0]1:N）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????目錄???????????0??2010-04-16?00:30??復件?HHT變換的三種方法?Matlab\
?????目錄???????????0??2019-01-09?20:14??復件?HHT變換的三種方法?Matlab\G?Rilling\
?????文件???????86016??2009-04-23?18:20??復件?HHT變換的三種方法?Matlab\G?Rilling\EMD程序使用.doc
?????文件???????39936??2010-04-13?12:37??復件?HHT變換的三種方法?Matlab\G?Rilling\document.doc
?????文件??????905216??2009-04-22?23:23??復件?HHT變換的三種方法?Matlab\G?Rilling\emd.ppt
?????文件???????55088??2009-04-22?23:19??復件?HHT變換的三種方法?Matlab\G?Rilling\pack_emd.tar.gz
?????文件??????100530??2009-04-22?23:20??復件?HHT變換的三種方法?Matlab\G?Rilling\pack_emd.zip
?????文件?????1697793??2009-04-22?23:26??復件?HHT變換的三種方法?Matlab\G?Rilling\tftb-0.2.tar.gz
?????文件?????????162??2009-04-22?23:22??復件?HHT變換的三種方法?Matlab\G?Rilling\~$cument.doc
?????文件???????30208??2009-04-22?23:27??復件?HHT變換的三種方法?Matlab\G?Rilling\~WRL2980.tmp
?????文件???????31744??2009-04-22?23:33??復件?HHT變換的三種方法?Matlab\G?Rilling\~WRL3223.tmp
?????文件???????31232??2009-04-22?23:25??復件?HHT變換的三種方法?Matlab\G?Rilling\~WRL3695.tmp
?????文件??????962513??2009-04-23?18:14??復件?HHT變換的三種方法?Matlab\G?Rilling\歸一化頻率.mht
?????文件??????344727??2009-04-23?18:12??復件?HHT變換的三種方法?Matlab\G?Rilling\最原始的EMD程序.mht
?????文件??????173863??2009-04-23?22:56??復件?HHT變換的三種方法?Matlab\G?Rilling\正弦插值法解決emd的端點.mht
?????文件??????275752??2009-04-23?18:00??復件?HHT變換的三種方法?Matlab\G?Rilling\鏡像延拓.mht
?????目錄???????????0??2010-04-16?00:30??復件?HHT變換的三種方法?Matlab\Matlab?File?Exchange?Center\
?????文件??????476047??2009-04-22?23:17??復件?HHT變換的三種方法?Matlab\Matlab?File?Exchange?Center\MATLAB?Central?-?File?detail?-?Hilbert-Huang?Transform.mht
?????目錄???????????0??2010-04-16?00:31??復件?HHT變換的三種方法?Matlab\Matlab?File?Exchange?Center\plot_hht\
?????文件??????958087??2007-01-25?14:59??復件?HHT變換的三種方法?Matlab\Matlab?File?Exchange?Center\plot_hht\HHT.pdf
?????文件??????102892??2007-04-28?15:57??復件?HHT變換的三種方法?Matlab\Matlab?File?Exchange?Center\plot_hht\Hum.wav
?????文件?????????893??2008-03-13?11:49??復件?HHT變換的三種方法?Matlab\Matlab?File?Exchange?Center\plot_hht\emd.m
?????文件?????????146??2007-08-26?00:42??復件?HHT變換的三種方法?Matlab\Matlab?File?Exchange?Center\plot_hht\findpeaks.m
?????文件?????????965??2008-04-24?13:36??復件?HHT變換的三種方法?Matlab\Matlab?File?Exchange?Center\plot_hht\plot_hht.m
?????目錄???????????0??2010-04-16?00:30??復件?HHT變換的三種方法?Matlab\National?Taiwan?Central?University\
?????文件??????541035??2009-04-23?18:38??復件?HHT變換的三種方法?Matlab\National?Taiwan?Central?University\HHT?MATLAB?PROGRAM.mht
?????文件?????????854??2009-04-23?18:37??復件?HHT變換的三種方法?Matlab\National?Taiwan?Central?University\dist_value.m
?????文件????????2011??2010-04-12?21:36??復件?HHT變換的三種方法?Matlab\National?Taiwan?Central?University\eemd.m
?????目錄???????????0??2019-01-06?10:33??復件?HHT變換的三種方法?Matlab\National?Taiwan?Central?University\example?and?help\
?????文件????????4884??2008-10-21?19:09??復件?HHT變換的三種方法?Matlab\National?Taiwan?Central?University\example?and?help\gsta.dat
?????文件??????161280??2008-10-21?19:32??復件?HHT變換的三種方法?Matlab\National?Taiwan?Central?University\example?and?help\help.doc
............此處省略7個文件信息