www.gusucode.com > signal 案例源码程序 matlab代码 > signal/SpectralContentOfSinusoidExample.m
%% Spectral Content of Sinusoid % Define a cosine of 200 Hz embedded in white noise. %% Fs = 1000; t = 0:1/Fs:.3; x = cos(2*pi*t*200)+randn(size(t)); %% % View the spectral content of the signal using the Welch algorithm. Hs = spectrum.welch; psd(Hs,x,'Fs',Fs)