说明：  小波由一族小波基函数构成，它可以描述信号时间（空间）和频率（尺度）域的局部特性。采用小波分析最大优点是可对信号进行实施局部分析，可在任意的时间或空间域中分析信号。
(Wavelet is composed of a family of wavelet basis functions, which can describe the local characteristics of signal in time (space) and frequency (scale) domains. The biggest advantage of wavelet analysis is that it can perform local analysis of signals and analyze signals in any time or space domain.)