tomwalters@0: % method of class @signal
tomwalters@0: % 
tomwalters@0: %   INPUT VALUES:
tomwalters@0: %  
tomwalters@0: %   RETURN VALUE:
tomwalters@0: %
tomwalters@0: % 
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
bleeck@3: 
tomwalters@0: 
tomwalters@0: function linsig=linsigx(sig)
tomwalters@0: % usage: linsig=linsigx(sig)
tomwalters@0: % transferes the signal from a signal that is in logarithmic scale
tomwalters@0: % to a signal, that is in linear scale.
tomwalters@0: % reverser operation from logsinx
tomwalters@0: %
tomwalters@0: % this is a little bit tricky since we cant take the times as measure for
tomwalters@0: % the logarithmic part. We therefore take the labels, which must be defined
tomwalters@0: % properly!
tomwalters@0: 
tomwalters@0: if length(sig.x_tick_labels) > 0
tomwalters@0:     tmin=sig.x_tick_labels(1)/1000;
tomwalters@0:     tmax=sig.x_tick_labels(end)/1000;
tomwalters@0: %     tmin=sig.x_tick_labels(1);
tomwalters@0: %     tmax=sig.x_tick_labels(end);
tomwalters@0: else
tomwalters@0:     error('signal::linsig: definie x labels of signal');
tomwalters@0: end
tomwalters@0: 
tomwalters@0: nr_points=getnrpoints(sig);
tomwalters@0: 
tomwalters@0: oldvals=getvalues(sig);
tomwalters@0: newvals=zeros(nr_points,1);
tomwalters@0: 
tomwalters@0: 
tomwalters@0: % [ntimes,scaleinfo]=distributelogarithmic(tmin,tmax,nr_points);
tomwalters@0: ntimes=linspace(tmin,tmax,nr_points);
tomwalters@0: mtimes=f2f(ntimes,0.001,0.035,0.001,0.035,'loglin');
tomwalters@0: % mtimes=f2f(ntimes,tmin,tmax,tmin,tmax,'loglin');
tomwalters@0: newvals=gettimevalue(sig,mtimes);
tomwalters@0: 
tomwalters@0: sr=nr_points/(tmax-tmin);
tomwalters@0: linsig=signal(newvals,sr);    % copy all values
tomwalters@0: linsig=setstarttime(linsig,tmin);
tomwalters@0: 
tomwalters@0: