SOUND COLLECTION DEVICE CONFIGURED TO MONITOR VOICEPRINT, AND PREPARATION METHOD

A sound collection device configured to monitor a voiceprint. The sound collection device is of a cone structure and comprises a front end portion (1) and a rear end portion (2), wherein the front end portion is horn-shaped; an inner wall surface of the front end portion presents a microstructure (3...

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Bibliographische Detailangaben
Hauptverfasser:	YUAN, Le, DAI, Hongbo, TANG, Debao, YIN, Jijing, CHEN, Wen, CHUAI, Zhenguo, CHEN, Ting, JU, Ling, LI, Yong, XU, Xingchun, WENG, Beibei, QIAN, Jie, WU, Yan, CHENG, Yang, HU, Wanjian, CHEN, Li, HE, Tianyu, BIAN, Kaiming, SHI, Weijun, ZHANG, Ze, ZHU, Yanquan, DING, Anqi
Format:	Patent
Sprache:	chi ; eng ; fre
Schlagworte:	ACOUSTICS ACOUSTICS NOT OTHERWISE PROVIDED FOR CLADDING OR PLATING BY SOLDERING OR WELDING CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING MACHINE TOOLS METAL-WORKING NOT OTHERWISE PROVIDED FOR METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING,NOISE OR OTHER ACOUSTIC WAVES IN GENERAL MUSICAL INSTRUMENTS PERFORMING OPERATIONS PHYSICS SOLDERING OR UNSOLDERING SOUND-PRODUCING DEVICES TRANSPORTING WELDING WORKING BY LASER BEAM
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Beschreibung
Zusammenfassung:	A sound collection device configured to monitor a voiceprint. The sound collection device is of a cone structure and comprises a front end portion (1) and a rear end portion (2), wherein the front end portion is horn-shaped; an inner wall surface of the front end portion presents a microstructure (3) of a pattern array; the microstructure of the pattern array is formed by means of laser etching; a sound wave frequency monitored by the sound collection device is 50 Hz to 10 kHz; a sound wave enters the sound collection device from an inlet of the front end portion, is reflected by the microstructure of the pattern array on the inner wall surface, and is transmitted from an outlet of the rear end portion; and a sound pressure at the outlet of the rear end portion is 4 to 8 times a sound pressure at the inlet of the front end portion. The inner wall surface of the front end portion of the sound collection device presents the microstructure of the pattern array, such that the frequency range of sound wave monitor