classdef sigbase < signal
	properties (GetAccess=protected, SetAccess=immutable)
		chans
		fs
	end
	methods
		function s=sigbase(channels,rate)
			if nargin<2, rate=nan; end
			if nargin<1, channels=nan; end
			s.chans=channels;
			s.fs=rate;
		end

		function c=channels(s), c=s.chans; end
		function c=rate(s), c=s.fs; end
	end
end
