代码搜索：低频接收机
找到约 806 项符合「低频接收机」的源代码
代码结果 806
www.eeworm.com/read/160253/10548813
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/464287/7166846
m a46.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/304875/13784541
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/485466/6562957
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/482646/6620609
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/264337/11319482
m chgoudslow.m
function out=chgoudslow(a)
b=a;
%提取点蚀小波分解系数a的低频段
a(1:64)=0;
a(65:128)=fft(b(65:128));
a(129:256)=fft(b(129:256));
a(257:512)=fft(b(257:512));
a(513:2048)=0;
a(2049:4096)=0;
a(4097:8192)=0;
a
www.eeworm.com/read/264337/11319489
m chgoulwlow.m
function out=chgoulwlow(a)
b=a;
%提取裂纹小波分解系数a的低频段
a(1:32)=0;
a(33:64)=fft(b(33:64));
a(65:128)=fft(b(65:128));
a(129:256)=fft(b(129:256));
a(257:512)=0;
a(513:1024)=0;
a(1025:2048)=0;
a(2049:
www.eeworm.com/read/157533/11694907
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/151613/12187317
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/216262/15022611
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