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annotate aim-mat/tools/@frame/erbdensity.m @ 4:537f939baef0 tip

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various bug fixes and changed copyright message
author Stefan Bleeck <bleeck@gmail.com>
date Tue, 16 Aug 2011 14:37:17 +0100
parents 74dedb26614d
children
rev   line source
tomwalters@0 1 % method of class @frame
tomwalters@0 2 %
tomwalters@0 3 % INPUT VALUES:
tomwalters@0 4 %
tomwalters@0 5 % RETURN VALUE:
tomwalters@0 6 %
tomwalters@0 7 %
tomwalters@0 8 % (c) 2003, University of Cambridge, Medical Research Council
tomwalters@0 9 % Stefan Bleeck (stefan@bleeck.de)
tomwalters@0 10 % http://www.mrc-cbu.cam.ac.uk/cnbh/aimmanual
tomwalters@0 11 % $Date: 2003/02/18 18:37:20 $
tomwalters@0 12 % $Revision: 1.1 $
tomwalters@0 13
tomwalters@0 14
tomwalters@0 15 function erb_density=erbdensity(fr)
tomwalters@0 16 cfs=getcf(fr);
tomwalters@0 17 nr_chan=getnrchannels(fr);
tomwalters@0 18 erb1=21.4*log10(4.73e-3*cfs(1)+1); % from Glasberg,Moore 1990
tomwalters@0 19 erb2=21.4*log10(4.73e-3*cfs(nr_chan)+1);
tomwalters@0 20 nr_erbs=erb2-erb1;
tomwalters@0 21 erb_density=nr_chan/nr_erbs;