Active noise reduction earphone capable of directionally listening and control method

Abstract

The invention relates to an active noise reduction earphone capable of directionally listening and a control method. The active noise reduction earphone comprises a microphone array with a plurality of microphone units, an active noise reduction module, a target beam forming module, a noise beam forming module, an adaptive cancellation module, a sound enhancement module and a loudspeaker. The microphone array is used for picking up external environment sound; the active noise reduction module is used for generating an anti-phase noise signal so as to suppress external environment noise in any direction; the target beam forming module is used for extracting target environment sound in a set direction; the noise beam forming module is used for extracting external environment noise except a set direction; and the adaptive cancellation module takes output signals of the target beam forming module and the noise beam forming module as input and is used for further reducing noise components in other directions contained in the target environment sound in the set direction.

Description

technical field [0001] The 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 earphones can significantly suppress external environmental noise, enabling the wearer to listen to music in a quieter environment, and its products have received widespread attention and applications. Feedforward control is an important part of active noise canceling headphones. The patent with the publication number WO2017096174A1 proposes a feed-forward active noise reduction earphone using multiple microphones, which implements multi-channel control for noise sources in different directions, which can im...

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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