Noise reduction device and method

A technology for noise reduction and noise reduction processing, which is applied in the multimedia field and can solve the problems of different degrees of noise leakage, irregularity, and different degrees of matching of headphones.

Active Publication Date: 2020-10-27
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] There are many challenges in the implementation of active noise reduction for headphones: on the one hand, the environmental noise is changeable and irregular; There are differences

Method used

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  • Noise reduction device and method

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Embodiment Construction

[0132] The terms "first", "second" and the like in the description, embodiments and claims of the present application and the above drawings are used to distinguish similar objects, and are not necessarily used to describe a specific sequence or sequence. Furthermore, the terms "comprising" and "having", as well as any variations thereof, are intended to cover a non-exclusive inclusion, for example, of a sequence of steps or elements. A method, system, product or device is not necessarily limited to those steps or elements explicitly listed, but may include other steps or elements not explicitly listed or inherent to the process, method, product or device.

[0133] It should be understood that in this application, "at least one (item)" means one or more, and "multiple" means two or more. "And / or" is used to describe the association relationship of associated objects, indicating that there can be three types of relationships, for example, "A and / or B" can mean: only A exists, o...

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Abstract

The embodiment of the invention discloses a noise reduction device and method. The noise reduction device comprises a main control unit and a noise reduction processing circuit, the main control unitdetermines noise reduction parameters according to the noise reduction level index or the characteristic value of the earphone matching the auditory meatus of a user; the noise reduction processing unit obtains reverse-phase noise of the environmental noise according to the noise reduction parameters; after the reverse-phase noise is mixed with the downlink playing audio signal, the environmentalnoise can be offset, and in addition, the noise reduction parameters are determined from a preset noise reduction parameter library according to the received or autonomously determined noise reductionlevel index instead of being configured in a unified manner, so that the noise reduction level can be adjusted flexibly, and the noise reduction effect and the user experience are improved.

Description

technical field [0001] The present application relates to the field of multimedia technologies, and in particular to a noise reduction device and method. Background technique [0002] When a user wears a headset to listen to music or make a voice call, the clarity of the music or voice signal heard by the user will be affected when there is ambient noise outside. When the ambient noise is severe, the user cannot even hear the audio information in the headset clearly. , the ambient noise greatly reduces the experience of the earphone wearer. Active noise canceling earphones try to emit noise with similar amplitude and opposite phase to the ambient noise through the speaker in the earphone, so as to achieve the purpose of offsetting the environmental noise and reduce the noise heard by the earphone wearer. [0003] There are many challenges in the implementation of active noise reduction for headphones: on the one hand, the environmental noise is changeable and irregular; Th...

Claims

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Application Information

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IPC IPC(8): H04R1/10
CPCH04R1/1083H04R2201/10H04R2460/01H04R1/1041G10K11/17881G10K11/17815G10K11/17817G10K2210/3033G10K2210/1081G10K11/17827G10K11/17873H04R3/005H04R2410/05
Inventor 李江李玉龙余晓伟范泛杨小洪欧阳山覃景繁
Owner HUAWEI TECH CO LTD
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