State Grid Jiangsu Taizhou Power Supply Company

Kaiming Bian

Yong Li

Beibei Weng

Ling Ju

Xingchun Xu

Ting Chen

Li Chen

Weijun Shi

Yan Wu

Ze Zhang

Hongbo Dai

Wen Chen

Yanquan Zhu

Anqi Ding

Jijing Yin

Yang Cheng

Zhenguo Chuai

Wanjian Hu

Tianyu He

Le Yuan

Jie Qian

Debao Tang

Provided are a sound gathering device for voiceprint monitoring and a preparation method. The sound gathering device is a cone structure and includes a front end portion () and a rear end portion (), the front end portion () is trumpet-shaped, an inner wall surface of the front end portion () is present a pattern array of a microstructure (), and the microstructure () presenting the pattern array is formed through laser etching. A sound wave frequency monitored by the sound gathering device is 50 Hz˜10 kHz, and a sound wave enters the sound gathering device from an entrance of the front end portion (), is reflected through the pattern array of the microstructure () on the inner wall surface of the front end portion (), and is transmitted from an exit of the rear end portion (), and a sound pressure of the exit of the rear end portion () is 4 times˜8 times a sound pressure of the entrance of the front end portion ().

Sound gathering device for voiceprint monitoring and preparation method

Growing community of inventors

Jiangsu, China

Kaiming Bian