sins.m

来自「DSP 系统带有信号生成 滤波等相关功能 下载后 请用解压缩软件打开」· M 代码 · 共 21 行

global t;
global t1;
global t2;
global t0;
global y;
global y1;
global N;
fudu=str2num(get(handles.fudu,'string'));
f=str2num(get(handles.pinlv,'string'));
t1=str2num(get(handles.startt,'string'));
t2=str2num(get(handles.endt,'string'));
chux=str2num(get(handles.chux,'string'));
Ts=0.01;
fs=1/Ts;
t=-(t2-t1)/2:Ts:(t2-t1)/2;
y=fudu*sin(2*pi*f*t+chux);
N=length(y);
t0=pi*fs*t/N;
y2=fft(y);
y2=fftshift(y2);
y1=abs(y2)*2/N;