tjuweige
2019-07-25, 12:21
正弦余弦的傅里叶变换不一样，为啥pwelch画出来是一样的？应该怎么画呢？
carrier_cos = cos(1*2*pi*0.125*(1:32960));
carrier_sin = sin(1*2*pi*0.125*(1:32960));
figure(1);pwelch(carrier_cos);
figure(2);pwelch(carrier_sin);
carrier_cos = cos(1*2*pi*0.125*(1:32960));
carrier_sin = sin(1*2*pi*0.125*(1:32960));
figure(1);pwelch(carrier_cos);
figure(2);pwelch(carrier_sin);