function volopt(type)
%
% Copyright (c) 1995 by Philipos C. Loizou
%
global rb_abs rb_norm rb_nosc VOL_NORM VOL_MAX vol_sli
if strcmp(type,'abs')
set(rb_abs,'Value',1); set(rb_norm,'Value',0); set(rb_nosc,'Value',0);
VOL_NORM=3;
set(vol_sli,'Value',100);
elseif strcmp(type,'norm')
set(rb_abs,'Value',0); set(rb_norm,'Value',1); set(rb_nosc,'Value',0);
VOL_NORM=1;
VOL_MAX=0;
set(vol_sli,'Value',100);
elseif strcmp(type,'nosc')
set(rb_abs,'Value',0); set(rb_norm,'Value',0); set(rb_nosc,'Value',1);
VOL_NORM=2;
VOL_MAX=0.5;
set(vol_sli,'Value',50);
end