TY - GEN
T1 - Traffic information extraction of vehicle acoustic signal based on wavelet packet analysis
AU - Li, Zhenshan
AU - Wang, Jianqun
AU - Ran, Xuejun
AU - Yao, Guozhong
PY - 2010
Y1 - 2010
N2 - A method for traffic information extraction of vehicle acoustic signal based on wavelet packet analysis is proposed. At first, the basic principle of wavelet packet analysis is introduced, and uses db5 wavelet function to decompose the acoustic signal by three-layer wavelet packet. According to the characteristic of the vehicle acoustic signal frequency which is in low frequency band, the sub-band energy at node (3, 0) is considered as the key parameter of the signal. At last, a threshold of classification is proposed based on the analysis of the experimental data, and the validity of this method is verified through large number of experiment. The recognition accuracy could be averagely reached 92%.
AB - A method for traffic information extraction of vehicle acoustic signal based on wavelet packet analysis is proposed. At first, the basic principle of wavelet packet analysis is introduced, and uses db5 wavelet function to decompose the acoustic signal by three-layer wavelet packet. According to the characteristic of the vehicle acoustic signal frequency which is in low frequency band, the sub-band energy at node (3, 0) is considered as the key parameter of the signal. At last, a threshold of classification is proposed based on the analysis of the experimental data, and the validity of this method is verified through large number of experiment. The recognition accuracy could be averagely reached 92%.
KW - Traffic information extraction
KW - Vehicle acoustic signal
KW - Wavelet packet analysis
UR - http://www.scopus.com/inward/record.url?scp=78650250489&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:78650250489
SN - 9787894631046
T3 - Proceedings of the 29th Chinese Control Conference, CCC'10
SP - 5438
EP - 5440
BT - Proceedings of the 29th Chinese Control Conference, CCC'10
T2 - 29th Chinese Control Conference, CCC'10
Y2 - 29 July 2010 through 31 July 2010
ER -