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Patent Searching and Data


Title:
MICROELECTROMECHANICAL SYSTEM MICROPHONE AND ACOUSTIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2019/051952
Kind Code:
A1
Abstract:
Disclosed are a microelectromechanical system microphone and an acoustic device comprising the microelectromechanical system microphone. The microelectromechanical system microphone comprises a microphone body (1), a sound guide tube (2) and a directional receiving shell (3) having an arcuate face, wherein the sound guide tube (2) is connected to the microphone body (1), and a tube opening of the sound guide tube (2) is located in a central region of a concave face side of the directional receiving shell (3). A sound signal is directionally received by the directional receiving shell (3) with the arcuate face, the characteristic of reflection of an arcuate face is used to converge sound signals, in the direction that the arcuate face faces, onto a region in the arcuate face range, then the sound guide tube (2) guides sound signals converged, at the tube opening, into a corresponding sound pick-up unit in the microphone body (1), achieving the whole sound pick-up process, and thus realising directional reception of the sound signal. By making simple structural modifications to the microelectromechanical system microphone, usually omni-directional acoustic performance is changed to directional receiving; not only the consistency of a product receiving range can be ensured with the premise of directional receiving, and there is no need for the cooperation of multiple microphones and causing excessively high costs.

Inventors:
WANG CHENGQIAN (CN)
Application Number:
PCT/CN2017/108578
Publication Date:
March 21, 2019
Filing Date:
October 31, 2017
Export Citation:
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Assignee:
GOERTEK TECH CO LTD (CN)
International Classes:
H04R19/04; H04R1/34
Foreign References:
CN207124767U2018-03-20
CN205726411U2016-11-23
CN203446028U2014-02-19
CN103813248A2014-05-21
CN2577524Y2003-10-01
US20140133685A12014-05-15
US20150102435A12015-04-16
Attorney, Agent or Firm:
TEKYRS INTELLECTUAL PROPERTY INC. (CN)
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