filter_fir.m

自适应滤波 回波抵消器中自适应滤波在matlab下的仿真

function Hd = filter_fir
%FILTER Returns a discrete-time filter object.

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% M-File generated by MATLAB(R) 7.3 and the Signal Processing Toolbox 6.6.
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% Generated on: 12-Nov-2008 19:45:44
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% FIR Window Lowpass filter designed using the FIR1 function.

% All frequency values are normalized to 1.

N    = 16;       % Order
Fc   = 0.85;     % Cutoff Frequency
flag = 'scale';  % Sampling Flag

% Create the window vector for the design algorithm.
win = rectwin(N+1);

% Calculate the coefficients using the FIR1 function.
b  = fir1(N, Fc, 'low', win, flag);
Hd = dfilt.dffir(b);



% [EOF]