Abstract: A new simple experimental method of three-dimensional acoustic source localization

problem is pro- posed.Acoustic source localization in a three- dimensional structure is

realized by the time difference information and space coordinates of sensors.The operation and

calculation are simple.The experiment cost is also reduced.This experimental method can not

only intuitively realize the three - dimensional acoustic emission source localization

process，but also realize the measurement of sound velocity. This simple experiment method

can deepen students' understanding of physics issues and increase their interest in

acoustic emission technology and source localization technology. The proposed experimental

method is suitable for popularization.

Key words: 声发射技术, 声源定位, 三维, 到达时差