minus.m

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 = minus(a,b)

% overloading of operator -

% $Id: minus.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