wolffd@0: function c = plus(a,b)
wolffd@0: 
wolffd@0: d = get(a,'Data');
wolffd@0: f = cell(1,length(d));
wolffd@0: n = get(a,'Name');
wolffd@0: t = get(a,'Title');
wolffd@0: 
wolffd@0: if isa(b,'mirdata')
wolffd@0:     e = get(b,'Data');
wolffd@0:     m = get(b,'Name');
wolffd@0:     u = get(b,'Title');
wolffd@0:     if not(isa(a,'miraudio'))
wolffd@0:        t = [t,' + ',get(b,'Title')];
wolffd@0:     end
wolffd@0: else
wolffd@0:     e = {{b}};
wolffd@0:     m = {num2str(b)};
wolffd@0:     t = [t,' + ',num2str(b)];
wolffd@0: end
wolffd@0:     
wolffd@0: for i = 1:length(d)
wolffd@0:     f{i} = cell(1,length(d{i}));
wolffd@0:     for j = 1:length(d{i})
wolffd@0:         ld = size(d{i}{j},1);
wolffd@0:         le = size(e{i}{j},1);
wolffd@0:         if ld > le
wolffd@0:             f{i}{j} = d{i}{j} + [e{i}{j};zeros(ld-le,size(e,2),size(e,3))];
wolffd@0:         elseif ld < le
wolffd@0:             f{i}{j} = [d{i}{j};zeros(le-ld,size(d,2),size(d,3))] + e{i}{j};
wolffd@0:         else
wolffd@0:             f{i}{j} = d{i}{j} + e{i}{j};
wolffd@0:         end
wolffd@0:     end
wolffd@0:     if isa(a,'miraudio')
wolffd@0:         n{i} = [n{i} '+' m{i}];
wolffd@0:     end
wolffd@0: end
wolffd@0: c = set(a,'Data',f,'Name',n,'Title',t);