ELECTRICAL DEVICE STATE SOUND IDENTIFICATION METHOD CONSIDERING FUSION OF TIME-DOMAIN AND FREQUENCY-DOMAIN FEATURES

ELECTRICAL DEVICE STATE SOUND IDENTIFICATION METHOD CONSIDERING FUSION OF TIME-DOMAIN AND FREQUENCY-DOMAIN FEATURES

An electrical device state sound identification method considering fusion of time-domain and frequency-domain features, comprising the following steps: acquiring and preprocessing sound time-domain data; transforming a time-domain signal into the frequency domain by means of Fourier transform, simul...

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Hauptverfasser: ZHANG, Hao, WANG, Wei, LU, Xinxin, ZHANG, Hui, CHEN, Man, DOU, Bowen, ZHAO, Zengtao, ZHONG, Jianxu, TAN, Yikai, SHEN, Yan, LI, Zhuang, SUN, Jianchao, HUANG, Fanqi, YAO, Jianchao, WANG, Xiaoyi, YANG, Xipeng, CHEN, Honghao, LIU, Shigang, ZHONG, Xuehui, ZHONG, Baoqiang, FENG, Zhiyan, ZHOU, Yupeng, FU, Jianmei, HE, Rufei, LIN, Weijie, PENG, Yumin, ZHENG, Chun
Format: Patent
Sprache:chi ; eng ; fre
Schlagworte:
ACOUSTICS
MUSICAL INSTRUMENTS
PHYSICS
SPEECH ANALYSIS OR SYNTHESIS
SPEECH OR AUDIO CODING OR DECODING
SPEECH OR VOICE PROCESSING
SPEECH RECOGNITION
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Beschreibung
Zusammenfassung:An electrical device state sound identification method considering fusion of time-domain and frequency-domain features, comprising the following steps: acquiring and preprocessing sound time-domain data; transforming a time-domain signal into the frequency domain by means of Fourier transform, simultaneously performing, on the basis of an embedded method, frequency-domain feature selection and algorithm training, and selecting an optimal feature subset; performing time-domain signal feature extraction on the sound original signal by using a wrapper method; filtering and fusing the time-domain features and the frequency-domain features by means of a mutual information method; and establishing a neural network, and, on the basis of the time-domain and frequency-domain fusion signal, identifying a sound state. The present invention reserves important feature information of the time domain and frequency domain and, by means of the embedded method and the wrapper method, reduces the data dimension, and also achiev