关于fft变换的程序,可用于各种时域图的频谱分析,值得试用-on fft transform the procedure can be used to map various time-domain analysis of the spectrum, worth trial

试用小波变换的模极大值判断delta函数，节约函数和三角形函数的奇异性。-Trial wavelet transform modulus maxima determine the delta function, saving function and triangle function singularity.