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doi:10.3850/978-981-08-7301-1_1391
Enhancing Voice- over- IP In An Audio Mixing Environment
Anitha Amarnath1 and A. Anasuya Threse Innocent2
1School of Computing Sciences from VIT University, Vellore, India
2School of Information Technology and Engineering, VIT University, Vellore, India.
ABSTRACT
This paper enhances VoIP service to Multiparty Voice-over-IP (MVoIP) service. MVoIP provide economical and natural group communication mechanism for applications such as voice conferencing. Different from conventional system, the paper deals with Decoupled Distributed Processing (DDP), an approach that has better scalability and have failure resilience property which avoids failure condition by dynamically distributing the workload among different peers. It has two phases for transmitting audio packet: Mixing phase and Distribution phase. Initially the CPU idle time is estimated for all the participating peers, and then selection of mixer is done by an election protocol where the peer having greater idle time is being selected as a mixer. Audio mixer continuously monitors the number of active speakers among all the participants. If the number of active speakers exceeds, it spawns new child mixers on other peer host to offload the audio mixing workload. Based on the constraints, adaptation of mixing tree that involves Mixer Splitting/Merging/Migration process is carried out.
Keywords: MVoIP, Failure resilience, Scalability, CPU idle time.
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