Title:
集音方法、装置及び媒体
Document Type and Number:
Japanese Patent JP6993433
Kind Code:
B2
Abstract:
A method for sound collection, includes: converting (S11) time domain signals with a number of M collected by devices for sound collection with a number of M into original frequency domain signals with a number of M; performing (S12) beam-forming on the M original frequency domain signals at each of preset grid points with a number of N, to obtain beam-forming frequency domain signals with a number of N in one-to-one correspondence with the N preset grid points; determining (S13) an average amplitude of frequency components with a number of N corresponding to each of frequency points with a number of K based on the N beam-forming frequency domain signals, and synthesizing a synthesized frequency domain signal including the K frequency points and having an average amplitude as an amplitude at the each of frequency points; and converting (S14) the synthesized frequency domain signal into a synthesized time domain signal.
Inventors:
Dragon dragon
Hou Haining
Hou Haining
Application Number:
JP2019563221A
Publication Date:
January 13, 2022
Filing Date:
October 15, 2019
Export Citation:
Assignee:
Beijing Xiaomi Mobile Software Co.,Ltd.
International Classes:
G10L21/0232; H04R1/40; H04R3/00
Foreign References:
| WO2018127447A1 |
Other References:
Wei Ma et al.,Compression computional grid based on functional beamforming for acoustic source localization,Applied Acoustics,134巻,pp.75-87,2018年02月09日
Attorney, Agent or Firm:
Ken Ieiri
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