Vector slicing for loop

I'm very new to Matlab and stuck right now with a for loop. I'd like to slice the array and grab blocks of 512 Samples. I want to grab the 10 blocks and write them into a new array. My following Code only grabs the first block.

for i=1:10;

blockindex=0;

startpoint = ((blockindex -1)*512)+1;

endpoint = ((blockindex) * 512)+1;

helparray = sound6_(startpoint:1:endpoint);

mic1 = [mic1; + helparray];

blockindex = blockindex + 40;

end

plot(mic1);

Answer 1

[Ang Feng]

I am not 100% sure about what you want to do exactly by 'slice'. If you want to rearrange the signal to a specific format, then the reshape function helps you do that. See the link to reshape:

https://nl.mathworks.com/help/matlab/ref/reshape.html

For a signal stored as array A, and you can just reshape A by the dimension you specify

n = floor(numel(A)/512);
B = reshape(A,[512 n]);

The you have columns of B is a vector of 512 elements, and save the first 10 columns to a new variable is easy.

C = B(:,1:10);

numel is the function to find the number of elements of a matrix.