关键词: 音频传输, 1-bit压缩感知, 特征辅助, 叠加序列

Abstract:

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.

Key words: audio transmission, 1-bit compressed sensing, feature aided, superimposed sequence