手机VoIP残余回声抑制技术的研究  

Study on Residual Echo Suppression Technique of Mobile Phone VoIP

作　　者：梁鸿斌 

机构地区：[1]成都三零瑞通移动通信有限公司,四川成都610005

出　　处：《通信技术》2014年第7期744-747,共4页Communications Technology

摘　　要：通过分析残余回声产生的原因,提出了基于话音激活检测的残余回声抑制技术。详细阐述了残余回声抑制技术的工作原理。为了对远端进行准确的话音激活检测,设计了话音激活检测的实现方案,同时对选择的检测算法进行了分析。最后,在Android智能手机上实现了残余回声抑制技术,并在不同的环境条件下进行了对比测试。测试结果表明采用文中提出的残余回声抑制技术可以有效的抑制残余回声,同时不影响手机用户的实际体验。By analyzing the causes of the residual echo,this paper puts forward the residual echo suppression technology based on voice activation detection. It also expounds the principle of residual echo suppression technology. To accomplish voice activation detection of distal accurately,the voice activation detection scheme is designed,and the selection of detection algorithm is analyzed. Finally,the residual echo suppression technology is realized on the Android smart phone,and the contrast test under different environmental conditions is made. Test results show that the residual echo suppression technology proposed in this paper can effectively suppress the residual echo,and does not affect the mobile phone users actually experience.

关 键 词：残余回声 话音激活检测 回声抵消 

分 类 号：TN912[电子电信—通信与信息系统]