An audio device and its spatial noise reduction method and system

Abstract

The invention discloses an audio device and its spatial noise reduction method and system. The audio device includes a microphone array and a speaker array, the microphone array includes a plurality of first microphones arranged in different spatial directions, and the speaker array includes a plurality of first microphones One-to-one correspondence with the first speakers; the method includes acquiring first sound signals received by each of the first microphones; the first sound signals include user sound signals and noise sound signals; according to preset sound information and each first sound signal Controlling the corresponding first speaker to play a suppression sound signal for the noise sound signal; the suppression sound signal includes an inverse sound wave for suppressing the corresponding noise sound signal, and the preset sound information includes pre-collected user voice information. The invention expands the suppression range of spatial noise during use, enhances the noise reduction effect, and can also ensure that the user's voice signal is not suppressed, which is convenient for the user to use.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of noise reduction, and in particular, to an audio device and a spatial noise reduction method and system thereof. Background technique [0002] Noise exists everywhere in people's lives, such as the sound of vehicles running, whistles, construction sounds, etc. Noise brings great troubles to people's lives, and in severe cases, it will affect human health. With the development of science and technology, active noise reduction technology came into being. Active noise reduction is to offset the external noise by generating reverse sound waves equal to the external noise through the noise reduction system. At present, the active noise reduction system in the prior art is usually composed of a single microphone and a single speaker. After the microphone picks up the noise, only one speaker can emit an anti-phase sound wave opposite to the noise phase to cancel the noise. However, Since th...

AI Technical Summary

Problems solved by technology

At present, the active noise reduction system in the prior art is usually composed of a single microphone and a single speaker. After the microphone picks up the noise, only one speaker can emit an anti-phase sound wave opposite to the noise phase to cancel the noise. However, Since the noise will be scattered during the propagation process, and the noise is often not transmitted from one direction, the noise reduction effect of the active noise reduction system based on a single microphone and a single speaker in the prior art is poor, and cannot better meet User needs

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