CoMAC: A cooperation-based multiparty audio conferencing system for mobile users

The existing architectures used in the multiparty audio conferencing systems are typically categorized as either centralized or decentralized. These architectures expose a trade-off between processing latency and system capacity, namely the number of participants. This paper proposes a multiparty au...

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Bibliographic Details
Published in:Multimedia tools and applications 2023-05, Vol.82 (12), p.17999-18017
Main Authors: Wang, Sheng-Shih, Chen, Hsueh-Yi, Sheu, Shiann-Tsong
Format: Article
Language:English
Subjects:
Audioconferencing
Computer Communication Networks
Computer Science
Conferencing systems
Cooperation
Data Structures and Information Theory
Multimedia Information Systems
Network latency
Performance evaluation
Special Purpose and Application-Based Systems
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Summary:The existing architectures used in the multiparty audio conferencing systems are typically categorized as either centralized or decentralized. These architectures expose a trade-off between processing latency and system capacity, namely the number of participants. This paper proposes a multiparty audio conferencing system for mobile users to improve the processing latency and system capacity. Instead of using the pure centralized or decentralized architecture, the proposed system adopts a novel cooperation-based architecture, in which only some participants are selected as the central controllers to deal with the tasks such as acoustic echo cancellation, encoding, decoding, mixing and de-mixing. The proposed system also uses a buffer reordering scheme to solve the problems of network jitters and out-of-order packets. This study analyzed the processing latency of the multiparty audio conferencing systems using the existing and proposed architectures. We also implemented these systems on diverse mobile platforms to compare the processing latency and number of participants. Performance evaluation results confirmed that the proposed cooperation-based architecture can not only reduce the processing latency but also support more participants, compared to the existing architectures.
ISSN:1380-7501
1573-7721
DOI:10.1007/s11042-022-14179-y