求用C語言實現壹個FIR數字低通濾波

function hd=ideal_lp(wc,M);

%Ideal Lowpass filter computation

%------------------------------------

%[hd]=ideal_lp(wc,M)

% hd=ideal impulse response between 0 to M-1

% wc=cutoff frequency in radians

% M=length of the ideal filter

%

alpha=(M-1)/2;

n=[0:1:(M-1)];

m=n-alpha+eps;

hd=sin(wc*m)./(pi*m);

點擊file中的new中M-file，新建上面的函數，保存後就可以運行了

另外,團IDC網上有許多產品團購,便宜有口碑