语音剪切程序

function aucut(t,overlap)% t 为切割秒数，overlap 为样本重叠秒数   
mkdir('classical10s');%创建保存剪切后语音的文件夹   
file = '/Users/liupeng/Desktop/matlab/speechRecognition/classical/';  
file1 = strcat(file, '*.au');  
a=dir(file1); %在文件夹中搜索以.au 为后缀的文件并记录，如.wav 文件则搜*.wav   
for i=1:length(a)%读取.au 后缀文件的数目
    file2 = strcat(file, a(i).name);  
    [y1,fs]=audioread(file2);%读取.au 文件的数值与参数，如.wav 文件则 wavread   
    str1 = strcat('/Users/liupeng/Desktop/matlab/speechRecognition/classical10s/', a(i).name);%记录其中一个.au 文件的名称  
    j=fix((length(y1)/fs-overlap)/(t-overlap));%切割后音乐的份数   
    for k=1:j%对每首音乐进行切割并命名  
        y2=y1(((k-1)*t*fs-(k-1)*overlap*fs +1):(k*t*fs-(k-1)*overlap*fs+1));   
        filename=strcat(str1,'_');  
        filename=strcat(filename,num2str(k-1));   
        filename=strcat(filename,'.wav');  
        %cd(foldername)  
        %if (j<=2)|| (k~=1 && k~=j)%若是 Jamendo 数据库，则调用切去首尾   
        audiowrite(filename,y2,fs);%若.wav 文件则为 wavwrite.  
        %end   
    cd ..  
    end  
end  
end