.png){kind=icon}
返回
Optimization Algorithm for Delay Estimation Based on Singular Value Decomposition and Improved GCC-PHAT Weighting
.png){kind=icon}
OA
AI
DOI：10.3390/s22197254.png)
.png){kind=icon}
.png){kind=icon}
分享.png){kind=icon}
收藏
摘要
En 中文
The accuracy of time delay estimation seriously affects the accuracy of sound source localization. In order to improve the accuracy of time delay estimation under the condition of low SNR, a delay estimation optimization algorithm based on singular value decomposition and improved GCC-PHAT weighting (GCC-PHAT-rho gamma weighting) is proposed. Firstly, the acoustic signal collected by the acoustic sensor array is subjected to singular value decomposition and noise reduction processing to improve the signal-to-noise ratio of the signal; then, the cross-correlation operation is performed, and the cross-correlation function is processed by the GCC-PHAT-rho gamma weighting method to obtain the cross-power spectrum; finally, the inverse transformation is performed to obtain the generalized correlation time domain function, and the peak detection is performed to obtain the delay difference. The experiment was carried out in a large outdoor pool, and the experimental data were processed to compare the time delay estimation performance of three methods: GCC-PHAT weighting, SVD-GCC-PHAT weighting (meaning: GCC-PHAT weighting based on singular value decomposition) and SVD-GCC-PHAT-rho gamma weighting (meaning: GCC-PHAT-rho gamma weighting based on singular value decomposition). The results show that the delay estimation optimization algorithm based on SVD-GCC-PHAT-rho gamma improves the delay estimation accuracy by at least 37.95% compared with the other two methods. The new optimization algorithm has good delay estimation performance.
Keyword:
delay estimation
singular value decomposition
GCC-PHAT-rho gamma weighting
generalized cross-correlation
AI总结
对已上传原文的论文进行重点信息的提取，主要内容包括：简要概述、研究摘要、背景介绍、关键亮点、图文解析、展望与总结。
期刊
IF:
3.5
论文数:
7.2W
被引数:
20.9W
机构
引用论文
Time-delay estimation based computed torque control with robust adaptive RBF neural network compensator for a rehabilitation exoskeleton基于时延估计的康复外骨骼鲁棒自适应RBF神经网络补偿计算力矩控制.png)
ISA TRANSACTIONS
ISA TRANSACTIONSIF6.5
PREAI
分享收藏Weighting Function Modification Used for Phase Transform-Based Time Delay EstimationCHINA COMMUNICATIONS
CHINA COMMUNICATIONSIF3.1
PREAI
分享收藏Model-free based adaptive nonsingular fast terminal sliding mode control with time-delay estimation for a 12 DOF multi-functional lower limb exoskeleton基于无模型的12 DOF多功能下肢外骨骼自适应非奇异时滞估计快速终端滑模控制
PREAI
分享收藏A Bearing Fault Diagnosis Method Based on Enhanced Singular Value Decomposition一种基于增强奇异值分解的轴承故障诊断方法
PREAI
分享收藏
查看更多内容