<abstract xmlns="http://www.w3.org/1999/xhtml"><p>Object-based audio techniques have become common since they provide the flexibility for personalized rendering. In this paper 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 multistage observation signals for transmission. In the decoding phase the preserved TF instants are recovered via 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 perceptual quality of each audio object.</p></abstract>

Object-based audio techniques have become common since they provide the flexibility for personalized rendering. In this paper 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 multistage observation signals for transmission. In the decoding phase the preserved TF instants are recovered via 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 perceptual quality of each audio object.

Multi-Stage Encoding Scheme for Multiple Audio Objects Using Compressed Sensing

School of Electronic Information and Control Engineering, Beijing University of Technology, Beijing, 100124 China

Cybernetics and Information Technologies

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Multi-Stage Encoding Scheme for Multiple Audio Objects Using Compressed Sensing"}

Object-based audio techniques have become common since they provide the flexibility for personalized rendering. In this paper a multi-stage encoding scheme for...

Multi-Stage Encoding Scheme for Multiple Audio Objects Using Compressed Sensing

Published Online: Dec 30, 2015

Page range: 135 - 146

DOI: https://doi.org/10.1515/cait-2015-0074

Keywords
Audio object coding, sparsity, compressed sensing, multi-stage encoding

© 2015 Ziyu Yang et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Multi-Stage Encoding Scheme for Multiple Audio Objects Using Compressed Sensing

Published Online: Dec 30, 2015

Page range: 135 - 146

DOI: https://doi.org/10.1515/cait-2015-0074

KeywordsAudio object coding, sparsity, compressed sensing, multi-stage encoding

© 2015 Ziyu Yang et al., published by De Gruyter Open

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
Audio object coding, sparsity, compressed sensing, multi-stage encoding