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找到约 10,000 项符合「Raspberry Pi」的源代码
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www.eeworm.com/read/361297/10058861
m ex030400.m
% Chapter 3: Example 3.4:
% DTFT of finite duration seq using mat-vec operation
%
n = -1:3; x = 1:5; % sequence x(n)
k = 0:500; w = (pi/500)*k; % [0, pi] axis divided into 5
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m ex030600.m
subplot(1,1,1)
n = -5:5; x = (-0.9).^n;
k = -200:200; w = (pi/100)*k;
X = x * (exp(-j*pi/100)) .^ (n'*k);
magX = abs(X); angX =angle(X);
subplot(2,1,1); plot(w/pi,magX);grid
axis([-2,2,0,15])
xlabel('
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m 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 multip
www.eeworm.com/read/361297/10058869
m ex030300.m
w = [0:1:500]*pi/500; % [0, pi] axis divided into 501 points.
X = exp(j*w) ./ (exp(j*w) - 0.5*ones(1,501));
magX = abs(X); angX = angle(X);
realX = real(X); imagX = imag(X);
subplot(2,2,1); plot(w/pi
www.eeworm.com/read/361297/10058871
m ex039900.m
w = [-100:100]*pi/100; % frequency between -pi and +pi
N = 5;
X1 = sin((w+eps)*N/2)./sin((w+eps)/2);
N = 15;
X2 = sin((w+eps)*N/2)./sin((w+eps)/2);
N = 25;
X3 = sin((w+eps)*N/2)./sin((w+eps)/2);
N = 1
www.eeworm.com/read/361297/10058874
m ex030500.m
subplot(1,1,1)
n = 0:10; x = (0.9*exp(j*pi/3)).^n;
k = -200:200; w = (pi/100)*k;
X = x * (exp(-j*pi/100)) .^ (n'*k);
magX = abs(X); angX =angle(X);
subplot(2,1,1); plot(w/pi,magX);grid
axis([-2,2,0,8]
www.eeworm.com/read/361297/10058878
m ex031300.m
w = [0:1:500]*pi/500; % [0, pi] axis divided into 501 points.
X = exp(j*w) ./ (exp(j*w) - 0.9*ones(1,501));
magX = abs(X); angX = angle(X);
subplot(2,1,1); plot(w/pi,magX); grid; axis([0,1,0,10])
xla
www.eeworm.com/read/361297/10058880
m 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
y =
www.eeworm.com/read/165406/10063657
m exa060603.m
%----------------------------------------------------------------------------
% exa060603.m, for example 6.6.3;
% To design IIR Butteworth bandstop DF by analog-lowpass,
% -------------------------
www.eeworm.com/read/165406/10063683
m exa011004_sinc.m
%-----------------------------------------------------------------
% exa011004_sinc.m, for example 1.10.4
% to generate the sinc function.
% 产生一 sinc 函数；
%-----------------------