Title:
EXPANDABLE PORTABLE RECTANGULAR PSEUDO-RANDOM MEMS DIGITAL MICROPHONE ARRAY
Document Type and Number:
WIPO Patent Application WO/2020/077952
Kind Code:
A1
Abstract:
Disclosed by the present application is an extendable portable rectangular pseudo-random MEMS digital microphone array, comprising an MEMS digital microphone array element, an array element mounting bracket, a cable arranging bracket, a signal processor, a first mounting bracket and a second mounting bracket. The two sides of the cable arranging bracket are respectively provided with the array element mounting bracket and the signal processor. The array element mounting bracket and the cable arranging bracket are connected by means of the first mounting bracket. The cable arranging bracket is connected to the signal processor by means of the second mounting bracket, a plurality of MEMS digital microphone array elements being arranged in pairs on the array element mounting bracket according to a rectangular pseudo-random array rule, and the microphone array elements arranged in pairs being symmetrical with respect to the plane of the array element mounting bracket; the MEMS microphone array elements can be calibrated by means of an acoustic calibrator which conforms to the International Electrotechnical Commission Standard (IEC standard). The present portable rectangular pseudo-random MEMS digital microphone array employs the structure of a rectangular pseudo-random microphone array that can be directly spliced using an array having the same specifications, can be directly connected to a network interface of a host computer, and at the same time can carry out the measurement and positioning of a sound source in a three-dimensional sound field space by using an acoustic holography method and a beam forming method.
Inventors:
ZHANG RUOTIAN (CN)
Application Number:
PCT/CN2019/080220
Publication Date:
April 23, 2020
Filing Date:
March 28, 2019
Export Citation:
Assignee:
BEIJING WEX TECH CO LTD (CN)
International Classes:
H04R1/08; H04R1/32; H04R1/40
Foreign References:
| CN105191345A | 2015-12-23 | |||
| CN103888862A | 2014-06-25 | |||
| CN204031425U | 2014-12-17 | |||
| CN101635874A | 2010-01-27 | |||
| CN202773062U | 2013-03-06 | |||
| US20160148057A1 | 2016-05-26 | |||
| CN107271139A | 2017-10-20 |
Attorney, Agent or Firm:
CHOFN INTELLECTUAL PROPERTY (CN)
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