摘要
麦克风阵列的方法在近年来被逐渐应用在电子耳蜗前端语音增强和提高言语识别率的研究里。该方法通过在空间不同的位置上放置若干麦克风,可以采集包含大量空间位置和方位信息的多通道信号,并形成增强目标信号和抑制干扰信号的特定波束指向模式。该方法更加适合用于电子耳蜗增强面对面交流的应用场景,其应用价值受到越来越多研究人员的关注。本文对麦克风阵列波束形成的原理进行阐述,并对目前文献中基于麦克风阵列的语音增强技术进行分析,归纳和总结了其中的技术难点和发展趋势。
Microphone array based methods are gradually applied in the front-end speech enhancement and speech recognition improvement for cochlear implant in recent years. By placing several microphones in different locations in space, this method can collect multi-channel signals containing a lot of spatial position and orientation information. Microphone array can also yield specific beamforming mode to enhance desired signal and suppress ambient noise, which is particularly suitable to be applied in face-to-face conversation for cochlear implant users. And its application value has attracted more and more attention from researchers. In this paper, we describe the principle of microphone array method, analyze the microphone array based speech enhancement technologies in present literature,and further present the technical difficulties and development trend.
作者
陈又圣
陈伟芳
张璞
陈培培
CHEN Yousheng;CHENWeifang;ZHANG Pu;CHEN Peipei(Shenzhen Institute of Information Technology, Shenzhen, Guangdong 518000, P.R.China)
出处
《生物医学工程学杂志》
EI
CAS
CSCD
北大核心
2019年第4期696-704,共9页
Journal of Biomedical Engineering
基金
广东省自然科学基金(2018A030313146,2016A030310073)
深圳市科技计划基础研究基金(JCYJ20160415114250896)
关键词
电子耳蜗
麦克风阵列
语音增强
波束形成
cochlear implant
microphone array
speech enhancement
beamforming
