摘要
随着移动互联网的不断发展,移动终端上的各种语音、音乐的应用需求变得越来越重要.然而由于移动网络的服务质量以及无线信道的通信效率下降导致接收终端所获得的数据对比发送端出现丢帧或误码失真情况,造成人耳听觉质量严重下降,迫切需要对多媒体接收终端的语音、音乐信号的丢帧隐藏技术进行研究.本文针对国内外学者们目前在研究的移动音频丢帧隐藏技术的热点问题,重点分析了目前主流移动音频编码器标准AMR-WB+和AVS-P10所采用的丢帧隐藏算法,指出两种丢帧隐藏算法存在的不足,并且提出了丢帧隐藏技术今后的研究和发展方向.
As Mobile Internet is growing continuously,the acquisition and processing of speech or music in mobile terminals has become increasingly important in the application of mobile network. However, the decreases of QoS on Internet as well as the communication efficiency of radio channel lead to frame loss or error distortion of the data obtained by receiver compared to sender and obvious human auditory audio decline at receiver. Therefore, it＇s urgently to research and implement the frame loss concealment technology in speech and music signal. The paper introduced a number of hot issues under research on frame loss concealment technology in mobile audio coding, and analyzed frame loss concealment algorithm used in the current mainstream audio codec AMR-WB ＋ and AVS-P10, and pointed out the defects of the two kinds of frame loss concealment algorithm. Finally , the directions of future research on frame loss concealment techniques were presented.
出处
《小型微型计算机系统》
CSCD
北大核心
2015年第5期1133-1137,共5页
Journal of Chinese Computer Systems
基金
国家重大科技专项(2010ZX03004-003-03)资助
国家自然科学基金重点项目(61231015)资助
国家自然科学基金面上青年项目(61102127
61201340
61201169
61272278)资助
湖北省教育厅青年项目(Q20132207)资助
关键词
移动音频编码
丢帧隐藏
差错掩蔽
音频信号处理
mobile audio coding
frame loss concealment
error masking
audio signal processing
