Need help with a For loop or any loop with some sort for my code

I have written a code to calculate an area under a graph( WAV file). But say if the the plot includes 60000 samples I need to calculate the area for every 5000 samples. Currently If "y1" is my data I have a set of data as below:

       y =  y1(1:5000);
       %y =  y1(5001:10000);
       %y =  y1(10001:15000);
       %y =  y1(15001:20000);

The data from "y" is used to calculate the power spectrum etc. At the moment I have to find "y" manually by Commenting and uncommenting for each line of data, so I was wondering whether anyone could help me out with this situation.

Thanks

Answer 1

[Wayne King]

If you have the Signal Processing Toolbox, you can use buffer:

    y = randn(5e4,1);
    y1 = buffer(y,5e3);

Then take your data as the columns of the matrix.

Otherwise, use reshape()

      y1 = reshape(y,5e3,10);

I think buffer() might be better, because that handles the case where your data length is not divisible by 5000.