摘要
针对1-bit压缩感知音频传输存在重构精度与音频质量较差的问题,提出稀疏音频信号特征信息辅助的1-bit重构的方法。发送端利用稀疏音频信号的部分支撑集构建特征信息,并将特征信息扩频后叠加到1-bit压缩的音频信号上传输;接收端恢复特征信息和1-bit压缩的音频信号,并构建特征辅助的重构算法以恢复音频信号。相较于经典的1-bit音频压缩重构方法,所提方法可在不增加频谱开销的情况下改善恢复音频的MSE(Mean Square Error)值和MOS(Mean Opinion Score)评分。
The conventional audio transmission based on 1-bit Compressed Sensing(CS)suffers the problems of poor reconstruction accuracy and sound quality.In this paper,a 1-bit reconstruction method incorporating the featured information of sparse audio signal is proposed.At the sending-end,the featured information,which is constructed with the partial support set of the sparse audio signal,is superimposed on the 1-bit compressed audio signal for further transmission.At the receiving-end,the feature information and the 1-bit compressed audio signal are recovered,and the feature-aided 1-bit reconstruction algorithm is developed for audio reconstruction.Compared with the conventional audio reconstruction method based on 1-bit CS,the proposed method can improve the Mean Square Error(MSE)and Mean Opinion Score(MOS)of the reconstructed audio without increasing the cost of spectrum resources.
作者
万东琴
卿朝进
阳庆瑶
蔡斌
余旺
WAN Dongqin;QING Chaojin;YANG Qingyao;CAI Bin;YU Wang(School of Electrical and Information Engineering,Xihua University,Chengdu 610039,China)
出处
《计算机工程与应用》
CSCD
北大核心
2020年第16期69-74,共6页
Computer Engineering and Applications
基金
四川省教育厅重点项目(No.15ZA0134)
四川省产业发展专项资金(No.ZYF-2018-056)
四川省科技计划项目重大科技专项基金(No.19ZDZX0016)
西华大学校重点项目(No.Z1120941)
研究生基金(No.ycjj2018180)。
关键词
音频传输
1-bit压缩感知
特征辅助
叠加序列
audio transmission
1-bit compressed sensing
feature aided
superimposed sequence
