First we corrected autostat and test it again. Only in few cases when we embedded data again in an embedded file we had problem. In other wise Sigma Delta has a way to correct itself. In this way we should do embedding from %0 to %100 to a file and calculate Sigma Delta for some point in this range ,for example 11 points :%0,10,20,30,40,50,60,70,80,90,100 ,then plot a chart for these data. After that add one unit to all samples of your audio file and do like above. Therefore you have some charts that help you to distinguish whether any data embedded to your file or not and if there are any data how much percent? Yesterday we wrote a program to plot chart for original file and saw this chart that based on theory it is true.


You can get the program there.