四川大学学报（自然科学版）2024，Vol.61Issue(5)：80-87,8.DOI:10.19907/j.0490-6756.2024.052006
一种基于MVDR的改进型麦克风阵列语音增强算法
An improved speech enhancement algorithm for microphone arrays based on MVDR
摘要
Abstract
Traditional Minimum Variance Distortionless Response(MVDR)beamforming algorithm struggles to accurately track the variations in signal statistical characteristics and exhibits poor adaptability to time-varying environments.In this paper,an enhanced method for real-time estimation of the correlation ma-trix of environmental noise and interference was proposed.A time-varying forgetting factor was utilized to dy-namically update the correlation matrix based on the probability of the presence of the target speech.Finally,diagonal loading technique was introduced to update the filter weight vector to ensure the quality of beamform-ing.Experimental results demonstrated that,compared to the traditional MVDR algorithm,the improved MVDR beamforming algorithm exhibited superior denoising performance,achieving higher segmental signal-to-noise ratios and PESQ scores.关键词
麦克风阵列/语音增强/MVDR/鲁棒波束形成Key words
Microphone array/Speech enhancement/MVDR/Robust beamforming分类
信息技术与安全科学引用本文复制引用
张皙,夏秀渝..一种基于MVDR的改进型麦克风阵列语音增强算法[J].四川大学学报（自然科学版）,2024,61(5):80-87,8.基金项目
国家自然科学基金(U1733109) （U1733109）
