代码搜索：波形合成
找到约 3,528 项符合「波形合成」的源代码
代码结果 3,528
www.eeworm.com/read/323211/13347248
m ex0905.m
%例9.5调制信号的波形及其功率谱；
Fs=1000;
Fc=400;
N=1000;
n=0:N-2;
t=n/Fs;
x=sin(2*pi*50*t);
subplot(221)
plot(t,x);
xlabel('t(s)');
ylabel('x');
title('被调信号');
axis([0 0.1 -1 1])
Nfft=1024;
window=ha
www.eeworm.com/read/323211/13347251
m ex0906.m
%例9.6调制信号的波形及其频谱；
R=0.005;t=-1.2:R:1.2;
f=Heaviside(t+1)-Heaviside(t-1);
f1=f.*cos(10*pi*t);
subplot(221)
plot(t,f)
xlabel('t');
ylabel('f(t)');
subplot(222);
plot(t,f1);
xlabel('t');
ylabe
www.eeworm.com/read/315096/13552319
m f5_1.m
%产生非平稳信号
%%暂态信号1
sig1=fmlin(128,0,0.4);
%%暂态信号2
sig2=fmlin(128,0.1,0.45);
sig=sig1+sig2;
%时域波形
figure(1)
plot(real(sig),'LineWidth',2);
hold on;
plot(imag(sig),'ro--');
legend('实部','虚部');
www.eeworm.com/read/315096/13552321
m f5_2.m
%产生非平稳信号
%%暂态信号1
sig1=fmlin(128,0,0.3);
%%暂态信号2
sig2=fmlin(128,0.2,0.4);
sig=sig1+sig2;
%时域波形
figure(1)
plot(real(sig),'LineWidth',2);
hold on;
plot(imag(sig),'ro--');
legend('实部','虚部');
x
www.eeworm.com/read/315096/13552372
m f8_2.m
%实验信号
N=1024;
t=1:N;
%%外环故障信号
fid=fopen('I3CH4.dat','r');
sig=fread(fid,N,'int16');
fclose(fid);
%归一化
sig=(sig-mean(sig))/std(sig,1);
%采样频率
fs=10000;
%时域波形
figure(1)
plot(t/fs,sig);
x
www.eeworm.com/read/315096/13552444
m f4_5.m
%产生非平稳信号
%%暂态信号1
sig1=real(amgauss(128,45).*fmconst(128,0.25,45));
%%暂态信号2
sig2=real(amgauss(128,85).*fmconst(128,0.25,85));
sig=sig1+sig2;
%时域波形
figure(1)
plot(sig,'LineWidth',2);
xlabel('时间
www.eeworm.com/read/314196/13571752
m call_caiyang2.m
%call_caiyang2 在频域绘制周期延拓波形
function []=call_caiyang2(h)
fs=get(gcbo,'string');
fs=str2num(fs);
axes(h);hold off;
fs=fs/1000;
n=floor(1/fs);
x=[0:0.1:1,0.9:-0.1:0];
k=-10:10;
df=0.01;
fc=0.1
www.eeworm.com/read/314139/13573944
txt dds 程序.txt
--DDS波形发生器 (Synplify pro 编译通过)
--输出频率 Fout = Fclk*2^M/2^N
--分辨率 Fclk/2^N
--最大输出频率 Fout = Fclk*50%(理论值,抽样定理)
--版本1.0 2004/9/29 by JJJ
library ieee;
use ieee.std_logic_1164.all;
use iee
www.eeworm.com/read/301807/13848148
m f5_1.m
%产生非平稳信号
%%暂态信号1
sig1=fmlin(128,0,0.4);
%%暂态信号2
sig2=fmlin(128,0.1,0.45);
sig=sig1+sig2;
%时域波形
figure(1)
plot(real(sig),'LineWidth',2);
hold on;
plot(imag(sig),'ro--');
legend('实部','虚部');
www.eeworm.com/read/301807/13848150
m f5_2.m
%产生非平稳信号
%%暂态信号1
sig1=fmlin(128,0,0.3);
%%暂态信号2
sig2=fmlin(128,0.2,0.4);
sig=sig1+sig2;
%时域波形
figure(1)
plot(real(sig),'LineWidth',2);
hold on;
plot(imag(sig),'ro--');
legend('实部','虚部');
x