function y=mvaverage(x,N)
%MVAVERAGE signal smoothing through the moving average method.
% Y = MVAVERAGE(X,N) Quickly smooths the signal X via averaging each
% sampling with the previous N samples.
%
% Example:
% t = 2*pi*linspace(-1,1);
% xn = cos(x) + 0.25 - 0.5*rand(size(x));
% xs = mvaverage(xn,8);
% plot(t,xn,t(5:end-4),xs(9:end)), legend('noisy','smooth'), axis tight
%
% See also MVAVERAGE2 and MVAVERAGEC
% by Yi Cao
% Cranfield University
% 11-09-2007
% y.cao@cranfield.ac.uk
%
y=filter(ones(1,N)/N,1,x);