说明：  小波变换 信号处理 通过伸缩平移运算对信号（函数)逐步进行多尺度细化，最终达到高频处时间细分，低频处频率细分，能自动适应时频信号分析的要求，从而可聚焦到信号的任意细节。
(Wavelet transform signal processing through the telescopic translation operations to signal (function) step by step multi scale refinement, the final breakdown of time at high frequency, low frequency subdivision, can automatically adapt to the requirements of time-frequency signal analysis, which can focus on any signal details.)