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/391780/8377316
m ms10_3.m
b=[0.1,-0.4,0.4,-0.1];
a=[1,0.3,0.55,0.2];
n=(0:1000)*pi/1000;
[h,w]=freqz(b,a,n);
db=20*log10(abs(h));
subplot(2,2,1),plot(w/pi,abs(h));grid
axis([0,1,1.1*min(abs(h)),1.1*max(abs(h))]);
title(
www.eeworm.com/read/391780/8377336
m ms21_3_2.m
%双线性变换法设计切比雪夫Ⅱ型数字带通
%数字滤波器指标
wp1=0.3*pi;wp2=0.7*pi; %数字滤波器的通带截止频率
ws1=0.2*pi;ws2=0.8*pi; %数字滤波器的阻带截止频率
Rp=1;As=20; %输入滤波器的通阻带衰减指标
%转换为模拟滤波器指标
Fs=10;T=1/Fs;
Omgp1=(2/T)*tan(wp1/2);
www.eeworm.com/read/391780/8377338
m ms21_4.m
%双线性变换法设计数字带阻
%数字滤波器指标
ws1=0.3*pi;ws2=0.7*pi; %数字滤波器的阻带截止频率
wp1=0.2*pi;wp2=0.8*pi; %数字滤波器的通带截止频率
Rp=1;As=20; %输入滤波器的通阻带衰减指标
ripple=10^(-Rp/20); %计算通带衰减对应的幅度值
Attn=10^(-As/20);
www.eeworm.com/read/391780/8377346
m ms5r23.m
n=-3:4*pi;
x=sin(n/2);
h=0.5.^n;
[y,ny]=convnew(x,n,h,n); %卷积运算
subplot(2,2,1);stem(n,x,'filled','k');
title('f1(n)');
subplot(2,2,2);stem(n,h,'filled','k');
title('f2
www.eeworm.com/read/391780/8377351
m ms8r24.m
fm=1;N=6;rp=1;as=20;
Wp=2*pi*fm;
dw=(2*Wp)/399;
w=0:dw:2*Wp;
h0=[ones(1,201),zeros(1,199)];
%设计巴特沃斯低通滤波器
[b,a]=butter(N,Wp,'s');
h=freqs(b,a,w);
subplot(3,1,1),plot(w/(2*pi),abs(h),'k',w/(2*pi
www.eeworm.com/read/391780/8377353
m ms20_2_2.m
%脉冲响应不变法设计数字带通
%数字滤波器指标
wp1=0.3*pi;wp2=0.7*pi; %滤波器的通带截止频率
wp=[wp1,wp2];
ws1=0.1*pi;ws2=0.9*pi; %滤波器的阻带截止频率
ws=[ws1,ws2];
Rp=1;As=15; %输入滤波器的通阻带衰减指标
ripple=10^(-Rp/20);
Attn=10^(
www.eeworm.com/read/391780/8377358
m ms23_2.m
h=[3,-1,-5,4,4,-5,-1,3];
M=length(h);n=0:M-1;
[A,w,type,tao]=amplres(h);type
subplot(2,1,1),stem(n,h,'k');
ylabel('h(n)');xlabel('n');
subplot(2,1,2),plot(w/pi,A,'k');
ylabel('A');xlabel('\pi');
www.eeworm.com/read/391780/8377362
m ms20r3.m
%脉冲响应不变法用于带阻滤波
%数字滤波器指标
wp1=0.3*pi;wp2=0.7*pi; %数字滤波器的通带截止频率
ws1=0.1*pi;ws2=0.9*pi; %数字滤波器的阻带截止频率
Rp=1;As=40; %输入滤波器的通阻带衰减指标
%转换为模拟滤波器指标
Fs=2000;T=1/Fs;
Omgp1=wp1*Fs;Omgp2=wp2*Fs
www.eeworm.com/read/391780/8377367
m ms25_1.m
%频率采样法设计低通
N=input('N='); %由使用者输入N
n=0:N-1;wc=0.4*pi %输入截止频率
N1=fix(wc/(2*pi/N)); %样点间隔为2*pi/N,N1为wc的样点数
N2=N-2*N1-1;
www.eeworm.com/read/391780/8377370
m ms21r4.m
%双线性变换法设计数字带阻
%数字滤波器指标
ws1=0.4*pi;ws2=0.6*pi; %数字滤波器的阻带截止频率
wp1=0.35*pi;wp2=0.65*pi; %数字滤波器的通带截止频率
Rp=1;As=20; %输入滤波器的通阻带衰减指标
%转换为模拟滤波器指标
T=0.1;Fs=1/T;
Omgp1=(2/T)*tan(wp1/2);Omgp