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找到约 8,364 项符合
N 的代码
eg10_11.m
n=30;
f=[0 0.4 0.5 1];
a=[1 1 0 0];
b=firls(n,f,a);
[h,w]=freqz(b);
bb=remez(n,f,a);
[hh,w]=freqz(bb);
axes('position',[0.2 0.2 0.5 0.5]);
plot(w/pi,abs(h),'b-',w/pi,abs(hh),'r--');
xlabel('f
eg10_4.m
<mark>N</mark>=12;%序列长度
<mark>n</mark>=0:<mark>N</mark>-1;%时域取样
x<mark>n</mark>=cos(pi*<mark>n</mark>/6);%产生序列
k=0:<mark>N</mark>-1;%频域取样
w<mark>n</mark>=exp(-j*2*pi/<mark>N</mark>);
<mark>n</mark>k=<mark>n</mark>'*k;
w<mark>n</mark><mark>n</mark>k=w<mark>n</mark>.^<mark>n</mark>k;
xk=x<mark>n</mark>*w<mark>n</mark><mark>n</mark>k %计算DFT
figure(1)%画图
stem(<mark>n</mark>,x<mark> ...
eg10_4_2.m
<mark>N</mark>=12;%序列长度
<mark>n</mark>=0:<mark>N</mark>-1;
k=0:<mark>N</mark>-1;
w<mark>n</mark>=exp(-j*2*pi/<mark>N</mark>);
<mark>n</mark>k=<mark>n</mark>'*k;
w<mark>n</mark><mark>n</mark>k=w<mark>n</mark>.^(-<mark>n</mark>k);
x<mark>n</mark>=(xk*w<mark>n</mark><mark>n</mark>k)/<mark>N</mark>;%计算IDFT
figure(1)%画图
stem(k,abs(xk))
figure(2)
stem(<mark>n</mark>,real(x<mark>n</mark>))
...
param1
n :allray?
8. 6. :x,z dimensions in inches of any plots
syncmod :model file
4
ex031200.m
n = -5:10; x = sin(pi*n/2);
k = -100:100; w = (pi/100)*k; % frequency between -pi and +pi
X = x * (exp(-j*pi/100)).^(n'*k); % DTFT of x
% signal decomposition
[xe,xo,m] = evenodd(x,n);
ex030900.m
n = 0:100; x = cos(pi*n/2);
k = -100:100; w = (pi/100)*k; % frequency between -pi and +pi
X = x * (exp(-j*pi/100)).^(n'*k); % DTFT of x
%
y = exp(j*pi*n/4).*x; % signal mu
ex031100.m
n = -5:10; x = rand(1,length(n));
k = -100:100; w = (pi/100)*k; % frequency between -pi and +pi
X = x * (exp(-j*pi/100)).^(n'*k); % DTFT of x
% folding property
y = fliplr(x); m = -flipl
ex031000.m
n = -5:10; x = rand(1,length(n)) + j*rand(1,length(n));
k = -100:100; w = (pi/100)*k; % frequency between -pi and +pi
X = x * (exp(-j*pi/100)).^(n'*k); % DTFT of x
% conjugation property
ex031200.m
n = -5:10; x = sin(pi*n/2);
k = -100:100; w = (pi/100)*k; % frequency between -pi and +pi
X = x * (exp(-j*pi/100)).^(n'*k); % DTFT of x
% signal decomposition
[xe,xo,m] = evenodd(x,n);
ex030900.m
n = 0:100; x = cos(pi*n/2);
k = -100:100; w = (pi/100)*k; % frequency between -pi and +pi
X = x * (exp(-j*pi/100)).^(n'*k); % DTFT of x
%
y = exp(j*pi*n/4).*x; % signal mu