MATLAB 临时代码-1

 

clear; clf; fs = 100 ; N = 1024 ; A=20;B=30;C=0.38; n=0:N-1; t=n/fs; x=A*sin(2*pi*B*t+C); figure(1); plot(t, x ); y=fft(x,N); yy=abs(y); yy=yy*2/N; f=n*fs/N; figure(2); plot(f, yy ); xlabel('pinlv'); ylabel('zhenfu'); title('tu1: fs=100, N=1024'); grid on; % % % % % % % % % % % % %{ clear; clf; fs = 100 ; N = 1024 ; A=20;B=30;C=0.38; n=0:N-1; t=n/fs; x=A*sin(2*pi*B*t+C)+ 2*A*sin(2*pi*1.5*B*t+2.5*C) ; y=fft(x,N); yy=abs(y); yy=yy*2/N; f=n*fs/N; %subplot(3,3,1), plot(f, yy ); plot(f, yy ); xlabel('pinlv'); ylabel('zhenfu'); title('tu1: fs=100, N=1024'); grid on; %} clear; clf; fs = 100 ; N = 1024 ; A=20;B=30;C=0.38;