samer@34: function [y,phi]=block(o,phi,n,f)
samer@34: % block - generate sine wave
samer@34: 
samer@34: t=2*pi*f*(0:n-1);
samer@34: y=sin(repmat(2*pi*phi,[1,n]) + t);
samer@34: phi=mod(phi+f*n,1);
samer@34: