Although both wavelet transform (WT) and wavelet packet transform (WPT) can be used, WPT is advantageous as it offers better partial characteristics with the same threshold.

• 小波变换能将各种交织在一起的由不同频率组成的混合信号分解成不同频段的信号，检测出许多其他分析方法忽略的信号特性，因此小波变换常被用于表面肌电信号处理。