cenvelope — computes envelope curves for bivariate EMD
[env, mean] = cenvelope(x); [env, mean] = cenvelope([],x); [env, mean] = cenvelope(x,ndirs); [env, mean] = cenvelope([],x,ndirs); [env, mean] = cenvelope(t,x,ndirs); [env, mean] = cenvelope(x,ndirs,INTERP); [env, mean] = cenvelope([],x,ndirs,INTERP); [env, mean] = cenvelope(t,x,ndirs,INTERP);
analyzed signal
sampling times, default 1:length(x)
number of directions used to compute the mean (default: 4) TODO: the actual number of directions according to the paper is 2*ndirs
interpolation scheme: 'linear', 'cubic' or 'spline' (default)
each stands for an envelope curve sustaining the tube envelope of the complex signal