The analytic wavelet transform (AWT) is a wavelet transform that works much like a transient Fourier transform. Therefore the AWT enables utilizing advantages of both the wavelet transform and Fourier transform. A special form of AWT developed for transient vibration and acoustics signal analyses is applied to various engineering signals in this paper. Application examples include a general time-frequency (T-F) analysis, analysis of exposures to impulsive vibrations and noises, and estimation of reverberation times. Some new definitions such as the T-F noise reduction and frequency weighted time history are defined by taking the advantage of unique capabilities of the AWT. Possible automotive applications of these new concepts are briefly discussed.
Application of Analytic Wavelet Transform to Transient Signal Analyses
Sae Technical Papers
SAE 2007 Noise and Vibration Conference and Exhibition ; 2007
2007-05-15
Conference paper
English
Application of analytic wavelet transform to transient signal analyses
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