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Transient Sound Visualization and Application to Analysis of Engine Acoustic Characteristics by Continuous Wavelet Transform

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4 Author(s)
Chen Anyu ; Bengbu Automobile Manage. Inst., Bengbu, China ; Jia Jide ; Dai Xiliang ; Zhu Zhongkui

For the reduction of internal combustion engine (ICE) sound pressure level the continuous wavelet transfer (CWT) is used for analysis of engine acoustic characteristics. Traditional CWT spectrum is not appropriate for engine sound evaluation, so a new technique A-weighted CWT was proposed and used in engine noise time-frequency analysis. Measurement was carried out and the engine acoustic characteristics were analyzed with A-weighted CWT. The new technique gives a satisfied visualization of transient sound, which is very useful for noise source identification.

Published in:

2011 Third International Conference on Measuring Technology and Mechatronics Automation  (Volume:3 )

Date of Conference:

6-7 Jan. 2011