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

doi:10.1088/1674-1056/27/11/114302

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.

Keywords: impact sound synthesis discrete state space contact force

Received: 20 June 2018
Revised: 01 October 2018
Accepted manuscript online:

PACS:	43.40.Kd	(Impact and impact reduction, mechanical transients)
	43.50.Pn	(Impulse noise and noise due to impact)

Fund:

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).

Corresponding Authors: Ke-An Chen
E-mail: kachen@nwpu.edu.cn

Cite this article:

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) Discrete state space method and modal extension method based impact sound synthesis model 2018 Chin. Phys. B 27 114302

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