Active noise-cancelling earphone capable of directional listening and control method

Abstract

The present disclosure relates to an active noise reduction earphone capable of directional listening and a control method, including a microphone array with a plurality of microphone units, an active noise reduction module, a target beamforming module, a noise beamforming module, an adaptive cancellation module, an acoustic Enhanced modules and speakers. The microphone array is used to pick up the external ambient sound; the active noise reduction module is used to generate an anti-phase noise signal to suppress the external environmental noise in any direction; the target beamforming module is used to extract the target ambient sound at the set direction; the noise beamforming The module is used to extract the external environmental noise except the set direction; the adaptive cancellation module takes the output signals of the target beamforming module and the noise beamforming module as input, and is used to further reduce other directions contained in the target ambient sound at the set direction noise components.

Description

technical field [0001] The present disclosure belongs to the technical field of noise reduction, and in particular relates to an active noise reduction earphone capable of directional listening and a control method. Background technique [0002] With the progress of modern society and the improvement of people's living standards, the problem of noise pollution has become increasingly prominent, which has seriously affected people's daily life and health. Active noise-cancelling headphones can significantly suppress external ambient noise, enabling the wearer to listen to music in a quieter environment, and its products have been widely concerned and applied. Feedforward control is an important part of active noise cancelling headphones. Patent Publication No. WO2017096174A1 proposes a feedforward active noise reduction earphone using multiple microphones, which implements multi-channel control for the problem of noise sources in different directions, which can improve the c...

AI Technical Summary

Problems solved by technology

At this time, letting the sound from a certain direction pass through the earphone without loss while shielding the noise from other directions may bring a better user experience, but the above-mentioned feed-forward active noise reduction earphones cannot achieve this effect

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