代码搜索：Raspberry Pi
找到约 10,000 项符合「Raspberry Pi」的源代码
代码结果 10,000
www.eeworm.com/read/168680/9902101
m sincy2.m
%对sin信号进行抽样得到的结论2
clc
clear
fc=1;%sin信号的频率
a=-4;%信号的起始时间
b=4;%信号的终止时间
ts=1/(32*fc);%为使信号能较平滑的画出，设置的采样时间间隔
fs=1/ts;%由上面的采样时间间隔得到的采样频率
t=a:ts:b;
f=-fs/2+fs/length(t):fs/length(t):fs/2;
%------
www.eeworm.com/read/168680/9902113
m sincy.m
%对sin信号进行抽样得到的结论1
clc
clear
fc=1;%sin信号的频率
a=-4;%信号的起始时间
b=4;%信号的终止时间
ts=1/(32*fc);%为使信号能较平滑的画出，设置的采样时间间隔
fs=1/ts;%由上面的采样时间间隔得到的采样频率
t=a:ts:b;
f=-fs/2+fs/length(t):fs/length(t):fs/2;
%------
www.eeworm.com/read/168680/9902115
asv sincy.asv
%对sin信号进行抽样得到的结论1
clc
clear
fc=1;%sin信号的频率
a=-4;%信号的起始时间
b=4;%信号的终止时间
ts=1/(16*fc);%为使信号能较平滑的画出，设置的采样时间间隔
fs=1/ts;%由上面的采样时间间隔得到的采样频率
t=a:ts:b;
f=-fs/2+fs/length(t):fs/length(t):fs/2;
%------
www.eeworm.com/read/168455/9912291
m example6_2.m
t=0:pi/100:4*pi;
s=sin(t+3*pi/4);
plot(s);
title('原始信号s');
%====================================
%对s进行小波分解：db1 3层
[c,l]=wavedec(s,3,'db1');
%====================================
%提取小波分解的低频系数a
www.eeworm.com/read/168453/9912613
m ex050800.m
% 第五章: 例5.8: 高分辨率频谱
%
% 基于信号x(n)的100个样本的高分辨率频谱
subplot(1,1,1)
n=[0:1:99];
x=cos(0.48*pi*n)+cos(0.52*pi*n);
subplot(2,1,1);stem(n,x);title('信号x(n), 0
www.eeworm.com/read/168453/9912615
m ex050600.m
% 第五章: 例 5.6: 简单DFT的实例
%
x = [1,1,1,1];
subplot(1,1,1);
%
% a) DTFT
w = [0:1:500]*2*pi/500;
[H] = freqz(x,1,w);
magH = abs(H); phaH = angle(H); phaH(126)=-47.5841*pi/180;
subplot(2,1,1); plot
www.eeworm.com/read/168453/9912623
m ex050700.m
% 第五章: 例 5.7:填补零点的实例
%
subplot(1,1,1);
x = [1,1,1,1];
%
% a) DTFT
w = [0:1:500]*2*pi/500;
[H] = freqz(x,1,w);
magH = abs(H); phaH = angle(H); phaH(126)=-47.5841*pi/180;
%
% b) 8-point DFT
N
www.eeworm.com/read/168453/9912679
m ex072200.m
% 第七章: 例 7.22
% 误差函数图和极值的数目
figure(1);subplot(1,1,1)
h = [1,2,3,4,3,2,1]/15;
M = length(h); n = 0:M-1;
[Hr,w,a,L] = Hr_Type1(h);
subplot(1,2,1);plot(w/pi,Hr);axis([0,1,-0.05,1.1])
xlabel('频率（单位
www.eeworm.com/read/168453/9912683
m ex071600.m
% 第七章: 例 7.16
% 频率采样技术: 低通, 最优法T1 & T2
% wp = 0.2pi, ws=0.3pi, Rp=0.25dB, As=50dB
% T1 = 0.5925, T2=0.1099
M = 60; alpha = (M-1)/2; l = 0:M-1; wl = (2*pi/M)*l;
Hrs = [ones(1
www.eeworm.com/read/168453/9912700
m ex072500.m
% 第七章 例 7.25
% 用PM算法进行的高通滤波器设计
%
ws = 0.6*pi; wp = 0.75*pi; Rp = 0.5; As = 50;
delta1 = (10^(Rp/20)-1)/(10^(Rp/20)+1);
delta2 = (1+delta1)*(10^(-As/20));
deltaH = max(delta1,delta2); deltaL = m