Title:
SOUND COLLECTION DEVICE CONFIGURED TO MONITOR VOICEPRINT, AND PREPARATION METHOD
Document Type and Number:
WIPO Patent Application WO/2024/032345
Kind Code:
A1
Abstract:
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 monitoring can be widened, the sound wave reflectivity can be improved, and the sound wave loss can be reduced. The present application further relates to a manufacturing method for the sound collection device.
Inventors:
LI YONG (CN)
CHEN TING (CN)
JU LING (CN)
YIN JIJING (CN)
ZHANG ZE (CN)
XU XINGCHUN (CN)
WENG BEIBEI (CN)
CHUAI ZHENGUO (CN)
WU YAN (CN)
CHEN LI (CN)
CHENG YANG (CN)
HE TIANYU (CN)
YUAN LE (CN)
QIAN JIE (CN)
TANG DEBAO (CN)
ZHU YANQUAN (CN)
DING ANQI (CN)
BIAN KAIMING (CN)
CHEN WEN (CN)
HU WANJIAN (CN)
DAI HONGBO (CN)
SHI WEIJUN (CN)
CHEN TING (CN)
JU LING (CN)
YIN JIJING (CN)
ZHANG ZE (CN)
XU XINGCHUN (CN)
WENG BEIBEI (CN)
CHUAI ZHENGUO (CN)
WU YAN (CN)
CHEN LI (CN)
CHENG YANG (CN)
HE TIANYU (CN)
YUAN LE (CN)
QIAN JIE (CN)
TANG DEBAO (CN)
ZHU YANQUAN (CN)
DING ANQI (CN)
BIAN KAIMING (CN)
CHEN WEN (CN)
HU WANJIAN (CN)
DAI HONGBO (CN)
SHI WEIJUN (CN)
Application Number:
PCT/CN2023/108399
Publication Date:
February 15, 2024
Filing Date:
July 20, 2023
Export Citation:
Assignee:
STATE GRID JIANGSU TAIZHOU POWER SUPPLY COMPANY (CN)
International Classes:
B23K26/362; B23K26/70; G10K11/28
Foreign References:
| CN115255650A | 2022-11-01 | |||
| CN209264896U | 2019-08-16 | |||
| CN109365995A | 2019-02-22 | |||
| CN110082653A | 2019-08-02 | |||
| CN111095010A | 2020-05-01 | |||
| CN112305462A | 2021-02-02 | |||
| US20200184054A1 | 2020-06-11 |
Attorney, Agent or Firm:
BEYOND ATTORNEYS AT LAW (CN)
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