% tee - T-junction sink, sends copies to two sub-sinks.
function s=tee(snk1,snk2)
	if ~unify_channels(channels(snk1),channels(snk2))
		error('Channel number mismatch');
	end
	s=sinkbinop(@dup,@(c1,c2)unify_channels(c1,c2),snk1,snk2);
end
