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

Author

Anyu, Chen ; Jide, Jia ; Xiliang, Dai ; Zhongkui, Zhu

Author_Institution

Bengbu Automobile Manage. Inst., Bengbu, China

Volume

3

fYear

2011

fDate

6-7 Jan. 2011

Firstpage

1048

Lastpage

1051

Abstract

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.

Keywords

acoustic noise; acoustic signal processing; automotive engineering; data visualisation; internal combustion engines; noise abatement; pressure; structural acoustics; time-frequency analysis; wavelet transforms; A-weighted CWT; continuous wavelet transform; engine acoustic characteristics; engine noise time-frequency analysis; engine sound evaluation; internal combustion engine; noise source identification; sound pressure level reduction; transient sound visualization; Acoustics; Continuous wavelet transforms; Diesel engines; Noise; Time frequency analysis; A-weighted; CWT; ICE; acoustic characteristics;

fLanguage

English

Publisher

ieee

Conference_Titel

Measuring Technology and Mechatronics Automation (ICMTMA), 2011 Third International Conference on

Conference_Location

Shangshai

Print_ISBN

978-1-4244-9010-3

Type

conf

DOI

10.1109/ICMTMA.2011.832

Filename

5721669