bleeck@3: % This external file is included as part of the 'aim-mat' distribution package
bleeck@3: % (c) 2011, University of Southampton
bleeck@3: % Maintained by Stefan Bleeck (bleeck@gmail.com)
bleeck@3: % download of current version is on the soundsoftware site: 
bleeck@3: % http://code.soundsoftware.ac.uk/projects/aimmat
bleeck@3: % documentation and everything is on http://www.acousticscale.org
tomwalters@0: function [m,b]=linearfit(sig)
tomwalters@0: % fit the signal with a streight line and return the slope (m) and the zero
tomwalters@0: % crossing (b)
tomwalters@0: 
tomwalters@0: y=getvalues(sig);
tomwalters@0: x=getxvalues(sig);
tomwalters@0: [p,s] = polyfit(x,y,1);
tomwalters@0: 
tomwalters@0: m=p(1);
tomwalters@0: b=p(2);