資源簡介
通過美爾頻率倒譜系數(shù)加奇異值分解的方法提出出來的音頻信號的感知哈希值.
編程環(huán)境是matlab。其中包含了MFCC函數(shù),分幀函數(shù),梅爾濾波器組函數(shù)等。

代碼片段和文件信息
function?f=enframe(xwininc)
%分幀函數(shù)將一個(gè)矢量分成互相重疊的幀
%輸入:x???被分幀的向量
%?????win??表示以win個(gè)點(diǎn)為一幀
%?????inc??表示每幀有inc個(gè)點(diǎn)互相重疊
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
nx=length(x(:));
nwin=length(win);
if?(nwin?==?1)
???len?=?win;
else
???len?=?nwin;
end
if?(nargin?3)
???inc?=?len;
end
nf?=?fix((nx-len+inc)/inc);
f=zeros(nflen);
indf=?inc*(0:(nf-1)).‘;
inds?=?(1:len);
f(:)?=?x(indf(:ones(1len))+inds(ones(nf1):));
if?(nwin?>?1)
????w?=?win(:)‘;
????f?=?f?.*?w(ones(nf1):);
end
?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????553??2010-06-02?12:33??mainmfcc.m
?????文件???????1882??2010-05-12?10:37??melbankm.m
?????文件????????976??2010-05-12?10:32??mfccsvd.m
?????文件????????593??2010-05-12?10:31??enfr
-----------?---------??----------?-----??----
?????????????????4004????????????????????4
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