摘要
分布式声传感器阵列在军事侦察、公共安全监控和人机交互等领域应用广泛.但时钟异步、频率响应失配和节点位置未知问题严重影响后续基于分布式声传感器阵列的语音处理算法的性能,因此近年来学者们热衷于研究校准这三类阵列失配问题的方法.首先,本文介绍了导致分布式声传感器网络各类失配问题的原因和三类问题解决的先后顺序.然后,将现有的解决三类问题的方法进行了综述.其中,时钟同步方法主要包括基于时间戳交换和短时傅里叶变换域线性相位漂移的方法,频率响应校准方法主要包括基于声源导向矢量和自适应滤波器的方法,节点位置/位姿校准方法则主要包括基于节点间几何构型和深度学习的方法.最后,给出了本领域未来研究的方向.
Distributed acoustic sensor arrays have been widely employed in many applications,such as military recon⁃naissance,security monitoring,man-machine interaction,etc.However,the problems of clock asynchrony,frequency re⁃sponse mismatch and unknown node location seriously affect the performance of subsequent speech processing algorithms based on distributed acoustic sensor arrays.Therefore,scholars have been keen to study calibration methods for these three problems in recent years.This article first introduces the causes of these mismatch problems and the sequence of solving the three problems.Then,the existing methods for these three problems are reviewed.Specifically,clock synchronization meth⁃ods mainly include methods based on timestamp exchange and linear phase shift in short⁃time Fourier transform domain,frequency response calibration methods mainly include methods based on steering vector of sound source and adaptive fil⁃ter,and node position/pose calibration methods mainly include methods based on geometric configuration among nodes and deep learning.Finally,the future research directions are provided.
作者
王睿
陈喆
殷福亮
WANG Rui;CHEN Zhe;YIN Fu-liang(School of Information and Communication Engineering,Dalian University of Technology,Dalian,Liaoning 116024,China)
出处
《电子学报》
EI
CAS
CSCD
北大核心
2021年第12期2468-2478,共11页
Acta Electronica Sinica
基金
国家自然科学基金(No.61771091,No.61871066)
国家863高技术研究发展计划(No.2015AA016306)
辽宁省自然科学基金(No.20170540159)
中央高校基本科研业务费(No.DUT17LAB04)。
关键词
分布式声传感器阵列
阵列失配
阵列校准
位置校准
频率响应校准
时钟同步
distributed acoustic sensor array
array mismatch
array calibration
position calibration
frequency re⁃sponse calibration
clock synchronization
