showsin.asv

来自「some simulation on digital FM,as well as」· ASV 代码 · 共 33 行

function [ output_args ] = showsin( input_args )
%UNTITLED1 Summary of this function goes here
%   Detailed explanation goes here


N=1024;
f1=1000;
fp=19000;
fp2=38000;
fs=15200;
fx=-0.5:1/N:0.5-1/N;
w=2*pi*f1/fs;
wp=2*pi*fp/fs;
wp2=2*pi*fp2/fs

% 原始信号
L=sin(w*[0:N-1]);
M=L;
ps=sin(wp*[0:N-1]);
ps2=sin(wp2*[0:N-1]);

% 调制信号
S=L.*ps2+M;

% 时域波形
plot(S);
plot(S+ps)
% plot(fftshift(abs(fft(S))));