power spectraldensity

• 功率谱

power spectraldensity的用法和样例：

例句

1. This effect explains why the second peak in the power spectrum is lower than the first.
   这个效应解释了为何功率谱上的第二峰低于第一峰的现象。
2. A self-adaptive feature extraction method based on power spectral centroid is proposed.
   摘要提出一种基于功率谱重心的自适应特征信息提取方法。