中国物理B ›› 2018, Vol. 27 ›› Issue (11): 114302-114302.doi: 10.1088/1674-1056/27/11/114302

所属专题: SPECIAL TOPIC — 80th Anniversary of Northwestern Polytechnical University (NPU)

• SPECIAL TOPIC—Recent advances in thermoelectric materials and devices • 上一篇    下一篇

Discrete state space method and modal extension method based impact sound synthesis model

Xu-Hua Tian(田旭华), Ke-An Chen(陈克安), Yan-Ni Zhang(张燕妮), Han Li(李晗), Jian Xu(胥健)   

  1. Department of Environmental Engineering, School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
  • 收稿日期:2018-06-20 修回日期:2018-10-01 出版日期:2018-11-05 发布日期:2018-11-05
  • 通讯作者: Ke-An Chen E-mail:kachen@nwpu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11574249 and 11874303) and the Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2018JQ1001).

Discrete state space method and modal extension method based impact sound synthesis model

Xu-Hua Tian(田旭华), Ke-An Chen(陈克安), Yan-Ni Zhang(张燕妮), Han Li(李晗), Jian Xu(胥健)   

  1. Department of Environmental Engineering, School of Marine Science and Technology, Northwestern Polytechnical University, Xi'an 710072, China
  • Received:2018-06-20 Revised:2018-10-01 Online:2018-11-05 Published:2018-11-05
  • Contact: Ke-An Chen E-mail:kachen@nwpu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 11574249 and 11874303) and the Natural Science Basic Research Plan in Shaanxi Province of China (Grant No. 2018JQ1001).

摘要:

The efficient and accurate synthesis of physical parameter-controllable impact sounds is essential for sound source identification. In this study, an impact sound synthesis model of a cylinder is proposed based on discrete state space (DSS) method and modal extension method (MEM). This model is comprised of the whole three processes of the physical interaction, i.e., the Hertz contact process, the transient structural response process, and the sound radiation process. Firstly, the modal expanded DSS equations of the contact system are constructed and the transient structural response of the cylinder is obtained. Then the impact sound of the cylinder is acquired using improved discrete Raleigh integral. Finally, the proposed model is verified by comparing with existing models. The results show that the proposed impact sound synthesis model is more accurate and efficient than the existing methods and easy to be extended to the impact sound synthesis of other structures.

关键词: impact sound synthesis, discrete state space, contact force

Abstract:

The efficient and accurate synthesis of physical parameter-controllable impact sounds is essential for sound source identification. In this study, an impact sound synthesis model of a cylinder is proposed based on discrete state space (DSS) method and modal extension method (MEM). This model is comprised of the whole three processes of the physical interaction, i.e., the Hertz contact process, the transient structural response process, and the sound radiation process. Firstly, the modal expanded DSS equations of the contact system are constructed and the transient structural response of the cylinder is obtained. Then the impact sound of the cylinder is acquired using improved discrete Raleigh integral. Finally, the proposed model is verified by comparing with existing models. The results show that the proposed impact sound synthesis model is more accurate and efficient than the existing methods and easy to be extended to the impact sound synthesis of other structures.

Key words: impact sound synthesis, discrete state space, contact force

中图分类号:  (Impact and impact reduction, mechanical transients)

  • 43.40.Kd
43.50.Pn (Impulse noise and noise due to impact)