jie16.m

16阶带通滤波器在matlab环境下仿真程序

function Hd = jie16
%JIE16 Returns a discrete-time filter object.

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% M-File generated by MATLAB(R) 7.1 and the Signal Processing Toolbox 6.4.
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% Generated on: 28-Apr-2009 21:28:34
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% Equiripple Bandpass filter designed using the FIRPM function.

% All frequency values are in Hz.
Fs = 40800;  % Sampling Frequency

Fstop1 = 3200;           % First Stopband Frequency
Fpass1 = 7200;           % First Passband Frequency
Fpass2 = 13200;          % Second Passband Frequency
Fstop2 = 17200;          % Second Stopband Frequency
Dstop1 = 0.001;          % First Stopband Attenuation
Dpass  = 0.17099735734;  % Passband Ripple
Dstop2 = 0.001;          % Second Stopband Attenuation
dens   = 16;             % Density Factor

% Calculate the order from the parameters using FIRPMORD.
[N, Fo, Ao, W] = firpmord([Fstop1 Fpass1 Fpass2 Fstop2]/(Fs/2), [0 1 ...
                          0], [Dstop1 Dpass Dstop2]);

% Calculate the coefficients using the FIRPM function.
b  = firpm(N, Fo, Ao, W, {dens});
Hd = dfilt.dffir(b);


% [EOF]