Title:
ACTIVE NOISE REDUCTION METHOD AND APPARATUS, AND EARPHONES
Document Type and Number:
WIPO Patent Application WO/2019/134115
Kind Code:
A1
Abstract:
An active noise reduction method for reducing noise in a cavity formed by a coupling between a housing and a user. The method comprises: acquiring first noise information in a cavity; dividing, according to preset frequency bands, the first noise information into noise information of at least two frequency bands that do not overlap with each other; adjusting, according to the noise information of the frequency bands that do not overlap with each other, at least two noise filtering parameters corresponding to the noise information of the frequency bands that do not overlap with each other; acquiring second noise information outside the cavity; and receiving the adjusted at least two noise filtering parameters, and processing the second noise information according to the same, so as to output audio data having reduced noise. A rough noise filtering parameter is configured first, and then feedback-based correction is performed on the noise filtering parameter during use, such that a large number of early stage calculations for obtaining a universally applicable noise filtering parameter are eliminated, and adaptive correction is performed for different use environments, thereby improving the adaptability of noise filtering parameters to different environments.
Inventors:
HSIEH KUAN-HONG (CN)
LEE MAO-HUNG (CN)
WANG HUI (CN)
LEE MAO-HUNG (CN)
WANG HUI (CN)
Application Number:
PCT/CN2018/071531
Publication Date:
July 11, 2019
Filing Date:
January 05, 2018
Export Citation:
Assignee:
1MORE INC (CN)
International Classes:
H04R1/10; H04R3/00
Foreign References:
| CN106792305A | 2017-05-31 | |||
| CN203340256U | 2013-12-11 | |||
| CN101400007A | 2009-04-01 | |||
| US20010053228A1 | 2001-12-20 |
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
Download PDF: