The lifting wavelet package transform based on interpolating subdivision was introduced. The engine cylinder head vibration signal's time-frequency characteristics were analyzed.
分析了移动装备发动机缸盖振动信号的时频特性，介绍了插补细分提升小波包变换算法。
The principle and process of the second generation transform based on interpolating subdivision is described, and then the selection of wavelet shrinkage is provided.
介绍了基于插值细分法的第二代小波变换的基本原理和变换过程，给出了小波降噪的阈值选取方法。
The principle and process of the second generation transform based on interpolating subdivision is described, and then the selection of wavelet shrinkage is provided.
介绍了基于插值细分法的第二代小波变换的基本原理和变换过程，给出了小波降噪的阈值选取方法。
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