| 1. | Wavelet transform , which has a multi - resolution analytic character , is a time - scale ( time - frequency ) analytic method of information . moreover , as both of its time - window and frequency - window can be changed it processes the ability of expressing local characters of information in time - frequency domain
小波变换是一种信号的时间尺度(时间频率)分析方法,它具有多分辨率分析的特点,而且在时频两域都具有表征信号局部特征的能力,是一种窗口大小固定不变但其形状可改变,时间窗和频率窗都可以改变的时频局部化分析方法。 |
