Design and implementation of array microphone for in-helmet voice communication system
10.16289/j.cnki.1002-0837.2025.02008
- VernacularTitle:盔内复杂噪声下麦克风阵列降噪通信系统设计研究
- Author:
Ruixi JIA
1
;
Geqiang ZHOU
;
Changsheng TIAN
;
Hongjing LIU
;
Liang SHAO
;
Cunxin PAN
Author Information
1. 中国航天员科研训练中心,北京 100094
- Keywords:
helmet system;
complex noise field;
voice communication system;
microphone array;
downlink voice;
noise reduction algorithm
- From:Space Medicine & Medical Engineering
2025;36(2):129-136
- CountryChina
- Language:Chinese
-
Abstract:
To address communication interference in complex noise environments inside and outside helmets,this study aims to improve the acoustic communication quality of in-helmet systems.A four-element microphone array communication hardware system was designed and implemented for use within the confined space of a helmet.Based on simulations of the internal acoustic field,the system incorporates a set of signal processing techniques,including array beamforming,echo cancellation,stationary noise speech enhancement,non-stationary noise suppression,and automatic gain control,forming a complete voice signal processing framework.Experimental results show that the proposed in-helmet microphone array noise reduction system achieves favorable downlink voice clarity under a total noise level of 85 dB(A),preliminarily validating the effectiveness and applicability of the implemented algorithms.This research provides essential technical and theoretical support for the future design and development of open-form in-helmet communication systems.
