function?z=FunFre（yfs）
nn=512;
m=nn/2;
m=m-mod（m1）;%%%?m是重疊數，即幀移
x=buffer（ynnm）;
siz=size（y）/nn+1;
siz=siz-mod（siz1）;??%%siz是幀數
N=2048;
R=4;
for?i=1:siz
k?=?1:R:N/2;?K?=?length（k）;??%%N是FFT變換點數，R是乘的次數，f是采樣頻率
X?=?fft?（x（:i）.*hann（length（x））?N）;?%%%%漢寧窗，
X=abs（X）;??%%%%對X做絕對值，取到幅度
HPSx?=?X（k）;?
for?r=?R-1:-1:1
??HPSx?=?HPSx.*X?（1:r:r*K）;
end
[YI]=max（HPSx）;??%%%%取最大值點Y是幅度值，I是對應下標
z（i）=I/N*fs;
end
figure（1）;
plot（z‘.r‘）;grid?on;
xlabel（‘幀數‘）;
title（‘基頻特征‘）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????558??2011-06-13?13:00??recognition\FunFre.m

?????文件????????932??2011-06-13?02:19??recognition\judge.m

?????文件????????247??2009-05-20?23:04??recognition\lowtohigh.m

?????文件???????2189??2012-03-21?15:54??recognition\main.m

?????文件????????104??2011-06-11?15:29??recognition\mapzo.m

?????文件????????228??2011-06-11?16:38??recognition\oushi.m

?????文件????????251??2011-06-13?02:10??recognition\oushi2.m

?????文件???????3628??2011-06-11?13:37??recognition\Parametre.mat

?????文件???????1017??2011-06-13?13:01??recognition\TimePara.m

?????文件???????3623??2011-06-11?13:37??recognition\train1.m

?????文件???????3621??2011-06-11?13:37??recognition\train2.m

?????文件???????3621??2011-06-11?13:37??recognition\train3.m

?????文件??????91324??2004-05-21?15:56??recognition\悲傷\1.wav

?????文件?????179930??2004-05-21?15:56??recognition\悲傷\10.wav

?????文件?????128798??2004-05-21?15:56??recognition\悲傷\11.wav

?????文件?????142488??2004-05-21?15:56??recognition\悲傷\12.wav

?????文件??????74978??2004-05-21?15:56??recognition\悲傷\13.wav

?????文件?????216090??2004-05-21?15:57??recognition\悲傷\14.wav

?????文件?????149254??2004-05-21?15:57??recognition\悲傷\15.wav

?????文件?????125120??2004-05-21?15:56??recognition\悲傷\16.wav

?????文件??????63860??2004-05-21?15:56??recognition\悲傷\17.wav

?????文件?????116994??2004-05-21?15:57??recognition\悲傷\18.wav

?????文件?????131028??2004-05-21?15:57??recognition\悲傷\19.wav

?????文件??????66078??2004-05-21?15:56??recognition\悲傷\2.wav

?????文件?????106730??2004-05-21?15:56??recognition\悲傷\20.wav

?????文件??????62630??2004-05-21?15:56??recognition\悲傷\21.wav

?????文件?????120248??2004-05-21?15:57??recognition\悲傷\22.wav

?????文件??????66108??2004-05-21?15:56??recognition\悲傷\23.wav

?????文件??????69400??2004-05-21?15:56??recognition\悲傷\24.wav

?????文件?????115380??2004-05-21?15:57??recognition\悲傷\25.wav

............此處省略87個文件信息