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/376218/2711940
m tufa_wujiaozhi_pe.m
function[class1_err_rate]=tufa_wujiaozhi_pe(snr_in_dB,in)
%噪声功率
E=1;
snr=10^(snr_in_dB/10);
sgma=sqrt((E/snr)/2);
%桢个数
N=100;
%突发间隔
N_Interval=80;
%突发长度
N_Length=5;
signal=reshape(in',1,267
www.eeworm.com/read/394072/8249710
m vssnlms_1.m
function [out h mu] = vsslms_1(refr,echo,order,W,mu_max,mu_opt,lambda,beta)
%根据一段误差信号（输出）能量的平均
%lambda 系数遗忘因子
%beta 步长调整系数
%lambda = 0.99; %遗忘因子
%lambda_p = 0.9; %功率遗忘因子
%beta = 0.001;
www.eeworm.com/read/113557/15453228
m gonglvpu_x.m
function gonglvpu_x(x)
figure(20),
clf reset
str='X功率谱分析 ';
set(gcf,'name',str,'numbertitle','off');
if mod(length(x),2)~=0
x(length(x)+1)=0;
end
f1=fft(x);
f2=conj(f1);
normal=f1.*f2;
www.eeworm.com/read/113557/15453233
m gonglvpu_z.m
function gonglvpu_z(x)
figure(22),
clf reset
str='Z功率谱分析 ';
set(gcf,'name',str,'numbertitle','off');
if mod(length(x),2)~=0
x(length(x)+1)=0;
end
f1=fft(x);
f2=conj(f1);
normal=f1.*f2;
www.eeworm.com/read/113557/15453241
m gonglvpu_y.m
function gonglvpu_y(x)
figure(21),
clf reset
str='Y功率谱分析 ';
set(gcf,'name',str,'numbertitle','off');
if mod(length(x),2)~=0
x(length(x)+1)=0;
end
f1=fft(x);
f2=conj(f1);
normal=f1.*f2;
www.eeworm.com/read/391780/8377668
m ms12_6.m
n=0:7;xn=[0,1,2,3,4,5,6,7];
w=linspace(0,2*pi,500);
X=xn*exp(-j*n'*w); %离散时间傅里叶变换
subplot(3,1,1),stem(n,xn,'k');
ylabel('x(n)');
subplot(3,1,2),plot(w,abs(X),'k'); %显示序列的幅度谱
axis([0,
www.eeworm.com/read/365044/9880668
m untitled.m
N=200;
L=512;
fs=100;
T=1/fs;
ws=2*pi*fs;
t=(0:N-1)*T;
f=exp((-2)*t);
F=fftshift(fft(f,L));
w=(-ws/2+(0:L-1)*ws/L)/2*pi;
plot(w,abs(F));
xlabel('w');
ylabel('exp((-2*t))*[u(t)-u(t-2)]的幅度谱')
www.eeworm.com/read/349382/10831528
m stochastic_features_atraction_unfunction.m
%提取零中心归一化瞬时幅度之谱密度的最大值garma_max
for i=1:size(std_value)
Amplititude_2ask=Amplititude_2ask_matrix(:,i);
amp_mean=mean(Amplititude_2ask);
amp_cn=Amplititude_2ask/amp_mean-1;
garma_max
www.eeworm.com/read/349382/10831531
asv stochastic_features_atraction.asv
%提取零中心归一化瞬时幅度之谱密度的最大值garma_max
for i=1:size(std_value)
Amplititude_2ask=Amplititude_2ask_matrix(:,i);
amp_mean=mean(Amplititude_2ask);
amp_cn=Amplititude_2ask/amp_mean-1;
garma_max
www.eeworm.com/read/450554/7481580
txt 函数实现动画的技巧.txt
9.1.8 用putimage 函数实现动画的技巧
9.2 菜单设计技术
9.2.1 下拉式菜单的设计
9.2.2 选择式菜单的设计
9.2.3 实现阴影窗口的技巧
9.3 音响技巧
9.3.1 音乐程序设计
9.3.2 自动识谱音乐程序
9.3.3 实现后台演奏音乐的技巧
9.1.7 用随