Question

对一个导通角为90度的周期正弦信号，如何用matlab进行编程

clear all;
close all;
fs=512;N=1024; %采样频率和数据点数
y=linspace(0,0,N*pi);
for m=0:0.5*pi:N*pi-0.5*pi-1
for n=m:0.0001:m+0.5*pi
y(:,m:m+0.5*pi)=abs(sin(m))*sin(n);
end
end
plot(y);
错误：
??? Subscript indices must either be real positive
integers or logicals.

Error in ==> sf at 10
y(:,m:m+0.5*pi)=abs(sin(m))*sin(n);

并进行FFT变换

Answer 1

怎么那么复杂的？
>> t=0:.01:0.5*pi;
>> y=sin(t);
>> plot(y)