代码搜索：功率谱
找到约 2,083 项符合「功率谱」的源代码
代码结果 2,083
www.eeworm.com/read/202064/15390724
m dpcheby1bilinear.m
%input signal
t=0:0.001:0.1;
x=sin(2*pi*100*t)+sin(2*pi*400*t);
xlabel('time/s')
fx=fft(x,512);
Pxx=fx.*conj(fx)/512; %做功率谱分析
f=1000*(0:256)/512; %坐标转换
xlabel('frequency/Hz')
grid;
www.eeworm.com/read/359245/10159301
m exa8_5.m
% exa080403_arspect.m ,for example 8.4.3
% to test arorder.m,arrcest.m,and bispect.m
clear;
% 装载数据
load ar1;
% 估计AR模型阶次
p=arorder(y);
% 计算AR模型参数
avec=arrcest(y,p)
% 计算基于AR模型的双谱，并画出其
www.eeworm.com/read/356556/10224813
m cyclic_spectrum.m
function [] = cyclic_spectrum(x, N, fs, M)
%%%%% 参量说明 %%%%%
% x -- 信号
% N -- 循环谱检测采样长度，必须小于等于信号序列长度
% fs -- 采样频率, 检测带宽为-fs/2至fs/2
% M -- 平滑点数, 时间分辨率*频率分辨率=M
%%%%%%%%%%%%%%%%%%%
%%% 参数 %%%
w
www.eeworm.com/read/159106/10694379
m m37.m
fs=8000;
load mtlb;
x=mtlb;
X=fft(x,1024);
subplot(3,2,1);plot(x);
title('语音信号时域波形');
subplot(3,2,2);plot([-512:511],fftshift(abs(X)));
title('语音信号幅度谱');
xI=zeros(1,2*length(x));
xI(1:2:end
www.eeworm.com/read/350382/10745977
m 6-6.m
%例程6－6 计算雷达回波信号的多谱勒时频谱
% e.g.6-6.m for example6-6;
N=512;
[fm,am,iflaw]=doppler(N,200,65,10,50);
figure;
plot(real(am.*fm));
title( 'Signal in time')
xlabel('Time');
ylabel('real pa
www.eeworm.com/read/349384/10831459
m five_features.m
function feature_vector=five_features(Amplititude,Phase,Frequency)
feature_vector=zeros(1,5);
%提取零中心归一化瞬时幅度之谱密度的最大值garma_max
amp_mean=mean(Amplititude);
amp_cn=Amplititude/amp_mean-1
www.eeworm.com/read/448259/7535665
m exa8_5.m
% exa080403_arspect.m ,for example 8.4.3
% to test arorder.m,arrcest.m,and bispect.m
clear;
% 装载数据
load ar1;
% 估计AR模型阶次
p=arorder(y);
% 计算AR模型参数
avec=arrcest(y,p)
% 计算基于AR模型的双谱，并画出其
www.eeworm.com/read/444759/7607483
m 6-6.m
%例程6－6 计算雷达回波信号的多谱勒时频谱
% e.g.6-6.m for example6-6;
N=512;
[fm,am,iflaw]=doppler(N,200,65,10,50);
figure;
plot(real(am.*fm));
title( 'Signal in time')
xlabel('Time');
ylabel('real pa
www.eeworm.com/read/299946/7819368
txt readme.txt
信道容量和天线相关系数的程序。波达角谱可以是均匀分布，Gauss分布，Laplace分布。
运行以 ***_batch.m命名的m文件。没有太多时间给程序写注释，请结合一书看。
www.eeworm.com/read/486204/6538126
m 6-6.m
%例程6－6 计算雷达回波信号的多谱勒时频谱
% e.g.6-6.m for example6-6;
N=512;
[fm,am,iflaw]=doppler(N,200,65,10,50);
figure;
plot(real(am.*fm));
title( 'Signal in time')
xlabel('Time');
ylabel('real pa