function part1(original, new)

y=wavread(original); % Reads in the stereo wavfile
ym=y(:,1); % Takes channel 1 audio
x=wavread(new); % Reads in the stereo wavfile
zm=z(:,1); % Takes channel 1 audio

% Number of samples
N=length(zm);

% Calculate Error
error=(1/N)*sqrt(sum((ym(1:N)-zm(1:N)).^2))


figure(1)
%original wav file
plot(abs(ym),'b');
hold on;
%new wav file
plot(abs(zm),'r');
hold off;
title('red: new, blue: original');