fatima - you could use audioread to read the data and then split into smaller ~1 second blocks of data. For example,
[y,Fs] = audioread(filename);
n = length(y);
for k = 1:Fs:n
audioBlock = y(k:min(k + Fs - 1, n), :);
% do something with this block
end
Note how we use the sampling frequency Fs (number of samples per second) to make sure that each audio block is of one second duration. We use
min(k + Fs - 1, n)
to handle the last audio block where we might not have Fs samples.
You could then use audiowrite to write the block to file. But do you really want to split the potentially large file into so many smaller ones?
