基于matlab的面向对象的信号处理类库。主要应用于音频、语音信号的一些处理。内含简单的使用说明

				function c = plus(a,b)								% overloading of operator +								% $Id: plus.m 39 2004-08-06 09:05:50Z mairas $								if isa(a,'spectrum') & isnumeric(b)				  c = spectrum(a.s + b, a.frequency);				elseif isnumeric(a) & isa(b,'spectrum')				  c = spectrum(a + b.s, b.frequency);				elseif isa(a,'spectrum') & isa(b,'spectrum')				  if not(a.frequency==b.frequency)				    error('Frequency vectors do not match.');				  end				  c = spectrum(a.s+b.s,a.frequency);				end