好用的hht程序画希尔伯特谱图的源程序调用格式如下:SampFreq500000;t0:1SampFreq:0014;Sig1t>0&t<00141+sin2pi15000tcos2pi60000t+sin2pi15000t;figure1;[Spectrumfreq]BookHHTSig;%谱图