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 ti