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Active noise reduction method and system and earphone

A technology of active noise reduction and earphones, which is applied in earphone/earphone accessories, earphones to reduce environmental noise, etc., to improve the noise reduction effect, enhance the listening experience, and reduce the impact.

Active Publication Date: 2020-04-10
BESTECHNIC SHANGHAI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, the existing earphones cannot solve the above problems

Method used

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  • Active noise reduction method and system and earphone
  • Active noise reduction method and system and earphone
  • Active noise reduction method and system and earphone

Examples

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Embodiment Construction

[0033] In order to enable those skilled in the art to better understand the technical solutions of the present disclosure, the present disclosure will be described in detail below in conjunction with the accompanying drawings and specific embodiments. Embodiments of the present disclosure will be described in further detail below in conjunction with the accompanying drawings and specific embodiments, but are not intended to limit the present disclosure. For the various steps described herein, if there is no need for a contextual relationship between each other, the order described herein as an example should not be considered as a limitation, and those skilled in the art will know that the order can be adjusted, as long as It is enough not to destroy the logic between them so that the whole process cannot be realized.

[0034] figure 1 A schematic diagram showing an active noise reduction process of an earphone according to an embodiment of the present disclosure. Such as f...

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Abstract

The invention relates to an active noise reduction method and system, and an earphone, and the method comprises the steps: responding to an audio signal played by a loudspeaker of the earphone, and determining a current transfer function of a transmission path from the loudspeaker to an in-ear microphone of the earphone through an echo filter of the earphone; determining a current filter coefficient of a feed-forward filter based on a preset filter coefficient of the feed-forward filter of the earphone, a preset transfer function of a transmission path from the loudspeaker to an in-ear microphone of the earphone and a current transfer function; and configuring a feed-forward filter according to the current filter coefficient so as to carry out feed-forward active noise reduction. Through active adaptive adjustment of the current filter coefficient of the feed-forward filter, the influence of different wearing modes and different ear canal structures on the noise reduction system can bereduced, the noise reduction effect of the earphone is improved, and meanwhile, the listening experience of a user is improved.

Description

technical field [0001] The present disclosure relates to the field of earphones, and more specifically, to an active noise reduction method, system, and earphones. Background technique [0002] With the progress of society and the improvement of people's living standards, earphones have become an indispensable daily necessities for people. Headphones with active noise suppression can enable users to enjoy a comfortable noise reduction experience in various noisy environments such as airports, subways, airplanes, restaurants, etc., and are increasingly widely recognized by the market and customers. However, different noise conditions, different earphone wearing styles, and different ear canal structures will all affect the noise suppression function of the existing earphones, and also bring users an unsatisfactory use experience. [0003] First of all, most of the active noise reduction solutions provided by current earphones require users to select filter coefficients accor...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04R1/10
CPCH04R1/1083
Inventor 童伟峰张亮徐明亮李倩
Owner BESTECHNIC SHANGHAI CO LTD
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