公开(公告)号：WO02065157A2

公开(公告)日：2002-08-22

申请号：PCT/US0201250

申请日：2002-02-13

Applicant: NASA ,  HUANG NORDEN E

Inventor： HUANG NORDEN E

IPC: G06F17/14 ,  G10L15/20 ,  G10L19/02 ,  G10L21/0208 ,  G01V3/00

CPC classification number: G10L21/0208 ,  G06F17/14 ,  G06F17/141 ,  G10L15/20 ,  G10L19/0212

Abstract: The present invention discloses a computer (410) implemented signal analysis method through the Hilbert-Huang Transformation "HHT" for analyzing acoustical signals (10), which are assumed to be nonlinear and nonstationary. The Empirical Decomposition Method "EMD" and the Hilbert Spectral Analysis "HSA" are used to obtain the HHT. Essentially, the acoustical signal will be decomposed into the Intrinsic Mode Function Components "IMFs". Once the invention decomposes the acoustic signal into its constituting components, all operations such as analyzing, identifying, and removing unwanted signals can be performed on these components. Upon transforming the IMFs into Hilbert spectrum, the acoustical signal may be compared with other acoustical signals.

Abstract translation: 本发明公开了一种通过希尔伯特黄变换“HHT”分析声信号（10）的计算机（410）信号分析方法，其被假定为非线性和非平稳的。 经验分解法“EMD”和希尔伯特谱分析“HSA”用于获得HHT。 本质上，声信号将被分解为内在模式功能组件“IMF”。 一旦本发明将声信号分解成其构成部件，可以对这些部件执行所有操作，例如分析，识别和去除不需要的信号。 在将IMF转换成希尔伯特频谱时，声信号可以与其他声学信号进行比较。