Error using horzcat
Dimensions of arrays being concatenated are not consistent.
data = [x y];
This means the x and y have a different number of elements. Then a horizontal concatenation cannot work, because matrices must be rectangular.
You have mentioned resample already, which allows to adjust the sizes of the vectors. interp1 would be fine also. But this would change the frequency of the signal. Maybe cropping or appending zeros is better:
% get a section of the sound file
[x, fsx] = audioread('Machine_Gun.wav'); % load an audio file
[y, fsy] = audioread('Dry_Synthesized_Machine_Gun.wav'); % load an audio file
x = x(:, 1); % get the first channel
y = y(:, 1); % get the first channel
nx = length(x); % signal length
ny = length(y); % signal length
yPad = y;
yCrop = y;
xPad = x;
xCrop = x;
if nx > ny
yPad(nx) = 0;
xCrop = xCrop(1:ny);
elseif nx < ny
xPad(ny) = 0;
yCrop = yCrop(1:nx);
end
c1 = corrcoef(xPad, yPad);
c2 = corrcoef(xCrop, yCrop);
