Title:
METHOD AND APPARATUS FOR EVALUATING CONSISTENCY OF MICROPHONE ARRAY
Document Type and Number:
WIPO Patent Application WO/2022/150950
Kind Code:
A1
Abstract:
Disclosed are a method and apparatus for evaluating the consistency of a microphone array. The method comprises: acquiring a plurality of audio signals collected by a microphone array, with a first audio signal being collected by a first microphone, and a second audio signal being collected by a second microphone; determining a second time difference between the first audio signal and the second audio signal at a first frequency; determining a first time difference between the first audio signal and the second audio signal according to the second time difference at each first frequency of a plurality of first frequencies, so as to determine a fixed phase difference between the first microphone and the second microphone at at least one evaluation frequency; and performing consistency evaluation on the first microphone and the second microphone according to a difference value between the fixed phase difference and an evaluation phase difference at each evaluation frequency. According to a time difference between different audio signals at a plurality of frequencies, a fixed phase difference between different microphones is determined, such that the measurement of the distance between a microphone and a sound source is avoided, and the accuracy of an evaluation result can be improved.
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Inventors:
XIANG TENG (CN)
WANG HAO (CN)
WU SHENG (CN)
WANG HAO (CN)
WU SHENG (CN)
Application Number:
PCT/CN2021/071197
Publication Date:
July 21, 2022
Filing Date:
January 12, 2021
Export Citation:
Assignee:
HUAWEI TECH CO LTD (CN)
International Classes:
H04R29/00
Foreign References:
| CN109313909A | 2019-02-05 | |||
| CN107465986A | 2017-12-12 | |||
| CN111812588A | 2020-10-23 | |||
| CN103176167A | 2013-06-26 | |||
| US20180359584A1 | 2018-12-13 |
Attorney, Agent or Firm:
LONGSUN LEAD IP LTD. (CN)
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