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A Multi-stage Encoding Scheme for Multiple Audio Objects Using Compressed Sensing
Yang Ziyu,Jia Maoshen *,Wang Wenbei,Zhang Jiaming
School of Electronic Information and Control Engineering,Beijing University of Technology
*Correspondence author
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Funding: National Natural Science Foundation of China （No.No. 61231015, 61201197), Specialized Research Fund for the Doctoral Program of Higher Education of the Peoples Republic of China）
Opened online:23 October 2015
Accepted by: none
Citation: Yang Ziyu,Jia Maoshen,Wang Wenbei.A Multi-stage Encoding Scheme for Multiple Audio Objects Using Compressed Sensing[OL]. [23 October 2015] http://en.paper.edu.cn/en_releasepaper/content/4657512
 
 
Object-based audio techniques have become common as they provide the flexibility for personalized rendering. In this work, a multi-stage encoding scheme for multiple audio objects is proposed. The scheme is based on intra-object sparsity. In the encoding phase, the dominant time-frequency (TF) instants of all active object signals are extracted and divided into several stages to form the multi-stage observation signals for transmission. In the decoding phase, the preserved TF instants are recovered via the Compressed Sensing (CS) technique, and further used for reconstructing the audio objects. The evaluations validated that the proposed encoding scheme can achieve scalable transmission while maintaining the perceptual quality of each audio object.
Keywords:Signal and information processing; Audio object coding; sparsity; compressed sensing; multi-stage encoding
 
 
 

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