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Study on a Pig Vocalization Classification Method Based on Multi-Feature Fusion

文献类型： 外文期刊

作者： Hou, Yuting 1 ; Li, Qifeng 1 ; Wang, Zuchao 2 ; Liu, Tonghai 4 ; He, Yuxiang 4 ; Li, Haiyan 1 ; Ren, Zhiyu 1 ; Guo, Xiaoli 1 ; Yang, Gan 1 ; Liu, Yu 1 ; Yu, Ligen 1 ;

作者机构： 1.Beijing Acad Agr & Forestry Sci, Res Ctr Informat Technol, Beijing 100097, Peoples R China

2.China Univ Geosci Beijing, Sch Sci, Beijing 100083, Peoples R China

3.Natl Engn Res Ctr Informat Technol Agr, Beijing 100097, Peoples R China

4.Tianjin Agr Univ, Coll Comp & Informat Engn, Tianjin 300384, Peoples R China

关键词： pig vocalization; multi-feature fusion; principal component analysis; classification recognition

期刊名称：SENSORS （ 影响因子：3.9； 五年影响因子：4.1 ）

ISSN：

年卷期： 2024 年 24 卷 2 期

页码：

收录情况： SCI

摘要： To improve the classification of pig vocalization using vocal signals and improve recognition accuracy, a pig vocalization classification method based on multi-feature fusion is proposed in this study. With the typical vocalization of pigs in large-scale breeding houses as the research object, short-time energy, frequency centroid, formant frequency and first-order difference, and Mel frequency cepstral coefficient and first-order difference were extracted as the fusion features. These fusion features were improved using principal component analysis. A pig vocalization classification model with a BP neural network optimized based on the genetic algorithm was constructed. The results showed that using the improved features to recognize pig grunting, squealing, and coughing, the average recognition accuracy was 93.2%; the recognition precisions were 87.9%, 98.1%, and 92.7%, respectively, with an average of 92.9%; and the recognition recalls were 92.0%, 99.1%, and 87.4%, respectively, with an average of 92.8%, which indicated that the proposed pig vocalization classification method had good recognition precision and recall, and could provide a reference for pig vocalization information feedback and automatic recognition.

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