waveFile='sunday.wav';
au=myAudioRead(waveFile);
index1=9000;
frameSize=512;
index2=index1+frameSize-1;
frame=au.signal(index1:index2);
opt=frame2pdf('defaultOpt');
opt.pdf='acf';
opt.maxShift=length(frame)/2;
opt.method=3;
showPlot=1;
acf=frame2pdf(frame, opt, showPlot);