应对说话人位置突变的鲁棒语声去混响  

Robust speech dereverberation considering sudden change of speaker position

作　　者：吴礼福[1,2] 孙帅恒 王雷 孙芯年 WU Lifu;SUN Shuaiheng;WANG Lei;SUN Xinnian(School of Electronic&Information Engineering,Nanjing University of Information Science&Technology,Nanjing 210044,China;Jiangsu Collaborative Innovation Center of Atmospheric Environment and Equipment Technology,Nanjing 210044,China)

机构地区：[1]南京信息工程大学电子与信息工程学院,南京210044 [2]江苏省大气环境与装备技术协同创新中心,南京210044

出　　处：《应用声学》2022年第6期851-859,共9页Journal of Applied Acoustics

基　　金：国家自然科学基金项目(12074192)。

摘　　要：多通道线性预测算法是一种有效的语声去混响方法,但若房间内说话人位置发生变化,房间冲激响应也会随之改变,从而导致去混响效果变差。该文研究了基于递归最小二乘算法的自适应多通道线性预测语声去混响方法,提出了一种去混响过程中检测说话人位置突变的方法,它借助已有的多通道传声器信号,并未明显增加系统开销。实验表明该方法可以有效检测说话人位置的突变,并通过重置滤波器改善算法的收敛速度和稳定性。Multi-channel linear prediction(MCLP)algorithm is an effective speech de reverberation method,but if the speaker position in the room changes,the room impulse response(RIR)will also change,resulting in poor dereverberation effect.In this paper,an adaptive MCLP speech dereverberation method based on recursive least square(RLS)algorithm is studied,and a method for detecting speaker position mutation in the process of dereverberation is proposed.With the help of the existing multi-channel microphone signal,it does not significantly increase the system overhead.Experiments show that this method can effectively detect the mutation of speaker position,and improve the convergence speed and stability of the algorithm by resetting the filter.

关 键 词：去混响 多通道线性预测 递归最小二乘 

分 类 号：N912.35[自然科学总论]