Title:
ACTIVE NOISE REDUCTION AUDIO DEVICE, METHOD, AND STORAGE MEDIUM
Document Type and Number:
WIPO Patent Application WO/2023/150919
Kind Code:
A1
Abstract:
Disclosed in embodiments of the present description are an active noise reduction audio device, a method, and a storage medium. The device comprises: a loudspeaker, a microphone, an analog filter, and a processing circuit. The loudspeaker is used for generating noise reduction sound, and the microphone is used for collecting environmental noise and the noise reduction sound and generating a first analog signal. The analog filter is used for providing a gain for the first analog signal and generating a second analog signal, wherein the second analog signal drives the loudspeaker to generate the noise reduction sound. The processing circuit is used for sending a control instruction to the analog filter according to the first analog signal and the second analog signal so as to adjust a gain and a phase shift of the analog filter. According to the present description, the amplitude and phase of the analog signal are adjusted by using the analog filter, and the noise reduction sound is generated thereby, so that a time delay caused by signal conversion links and digital filter processing can be reduced, and the audio device can perform a noise reduction response in time, thereby improving a noise reduction effect.
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Inventors:
ZHANG CHENGQIAN (CN)
ZHENG JINBO (CN)
ZHENG JINBO (CN)
Application Number:
PCT/CN2022/075569
Publication Date:
August 17, 2023
Filing Date:
February 08, 2022
Export Citation:
Assignee:
SHENZHEN SHOKZ CO LTD (CN)
International Classes:
G10K11/178; H04R1/10; H04R3/00
Domestic Patent References:
| WO2009041012A1 | 2009-04-02 |
Foreign References:
| CN107924674A | 2018-04-17 | |||
| CN112383860A | 2021-02-19 | |||
| CN111935589A | 2020-11-13 | |||
| US20110002476A1 | 2011-01-06 | |||
| CN112992114A | 2021-06-18 | |||
| US20110211707A1 | 2011-09-01 | |||
| US20190019493A1 | 2019-01-17 | |||
| US20120057720A1 | 2012-03-08 |
Attorney, Agent or Firm:
METIS IP (CHENGDU) LLC. (CN)
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