代码搜索：Raspberry Pi
找到约 10,000 项符合「Raspberry Pi」的源代码
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www.eeworm.com/read/461473/7226867
m dtransform.m
%dtranform.m 数字滤波器设计，从低通到其他类型滤波器的频率对应关系
%具体的坐标频率转换公式参见《数字信号处理》第二版 丁玉美，高西全, 西安电子科技大学出版社
function [out0,out1]=dtransform(w,string)
%下面的参数为设计滤波器时给定的参数
wu=0.7*<mark>pi</mark>;
wl=0.5*<mark>pi</mark>;
wc=0.4*<mark>pi</mark>; %最终设计的低 ...
www.eeworm.com/read/461473/7226922
m firfilterdesign.m
wp=0.2;ws=0.4;Rp=1;As=20; % 定义滤波器参数(可修改)
[n,wc]=buttord(wp,ws,Rp,As); % 计算滤波器阶次和3dB截止频率
[b,a]=butter(n,wc); % 设计巴特沃斯滤波器
w=[0:pi/200:pi];
www.eeworm.com/read/461382/7228274
m specfun.m
function y = specfun(x,M,h)
fei = sin(pi*M*h)/M/sin(pi*h);
y=0;
for n =1 : M
y = y + 1/M * (sinc( x - 0.5*( 2*n -1-M)*h)).^2;
for m = 1:M
alpha(n,m) = pi*h*( m+ n-1-M);
www.eeworm.com/read/461178/7232415
m dm09303.m
% dm09303
% 周期三角脉冲信号频谱分析
function CTFS_SJ
% 绘制周期三角脉冲信号频谱
% Nf：谐波的次数
% an：第1,2,3,...次谐波余弦项系数
display('Please input the value of Nf ');
Nf = input('Nf = ');
an = zeros(Nf+1,1);
cn = zeros(N
www.eeworm.com/read/459244/7278288
m chap4_9s.m
function [sys,x0,str,ts] = spacemodel(t,x,u,flag)
switch flag,
case 0,
[sys,x0,str,ts]=mdlInitializeSizes;
case 1,
sys=mdlDerivatives(t,x,u);
case 3,
sys=mdlOutputs(t,x,u);
case
www.eeworm.com/read/459244/7278299
m chap4_7s.m
function [sys,x0,str,ts] = spacemodel(t,x,u,flag)
switch flag,
case 0,
[sys,x0,str,ts]=mdlInitializeSizes;
case 1,
sys=mdlDerivatives(t,x,u);
case 3,
sys=mdlOutputs(t,x,u);
case
www.eeworm.com/read/459103/7282648
m ex2_1.m
x=1+2i;
y=3-sqrt(17);
z=(cos(abs(x+y))-sin(78*pi/180))/(x+abs(y))
www.eeworm.com/read/459103/7282681
m ex5_8.m
t=0:0.01:2*pi;
x=exp(i*t);
y=[x;2*x;3*x]';
plot(y)
grid on; %加网格线
box on; %加坐标边框
axis equal %坐标轴采用等刻度
www.eeworm.com/read/459103/7282689
m ex5_17.m
[x,y]=meshgrid(0:0.25:4*pi);
z=sin(x+sin(y))-x/10;
mesh(x,y,z);
axis([0 4*pi 0 4*pi -2.5 1]);
www.eeworm.com/read/459103/7282705
m ex5_15.m
subplot(2,2,1);
ezplot('x^2+y^2-9');axis equal
subplot(2,2,2);
ezplot('x^3+y^3-5*x*y+1/5')
subplot(2,2,3);
ezplot('cos(tan(pi*x))',[ 0,1])
subplot(2,2,4);
ezplot('8*cos(t)','4*sqrt(2)*sin(t)',[