Fault Detection of In-Service Bridge Expansion Joint Based on Voiceprint Recognition

Table 1

Sounds in BEJ environment.

Factor	Description
Vehicle factors	Audio events generated by vehicles passing over BEJs include wheel impact sounds, vehicle horn sounds, and more
Human factors	Audio events, such as the sound of personnel speaking, can occur due to the passage of inspectors near BEJs
Bird and animal factors	Audio events, such as bird sounds, can occur due to birds and animals passing near the expansion joints
Noise factors	Noise can be generated by the aerodynamic factors of the environment in which it is located, such as urban ambient noise and beach ambient noise