Feature Extraction of Fault Engine Audio Signal Based on Wavelet Packet Transform

Gao Huan Xu; Jun Xiang Ye

doi:10.4028/www.scientific.net/AMR.546-547.675

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 546-547Feature Extraction of Fault Engine Audio Signal...

Feature Extraction of Fault Engine Audio Signal Based on Wavelet Packet Transform

Abstract:

Due to the different structure of the machine parts, machine vibrations sent audio signal have different frequency. The early defect, audio signal can be analyzed well by wavelet packet transform. After wavelet packet decomposition and reconstruction, Audio signal noise reduced. And then through high and low frequency decomposition, we can constitute the energy characteristics. The experiment shows: the extracted features have good structure.

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Periodical:

Advanced Materials Research (Volumes 546-547)

Pages:

675-679

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.546-547.675

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Online since:

July 2012

Authors:

Gao Huan Xu, Jun Xiang Ye

Keywords:

Audio Signal, Engine, Fault Diagnosis, Wavelet Packet

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