Comparison of delivery architectures for immersive audio in crowded networked games

Boustead, P.; Safaei, Farzad

doi:10.1145/1005847.1005854

Cited by 21 publications

(17 citation statements)

References 7 publications

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“…Assuming that DICE is desirable for some PE applications, various models can be envisaged for its Internet-wide delivery [4]. For several reasons, including access bandwidth constraints, scalability, and privacy, we have focused on a server-based model, the simplest of which is to use a central audio server.…”

Section: Central Audio Servermentioning

confidence: 99%

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Latency-driven distribution: infrastructure needs of participatory entertainment applications

et al. 2005

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This article evaluates network and server infrastructure requirements to support real-time flows associated with networked entertainment applications. These include the state information flow to update the status of the virtual environment and immersive communication flows such as voice, video, gesture, and haptics communication. The article demonstrates that scaling these applications to large geographical spreads of participants requires distribution of computation to meet the latency constraints of the applications. This latency-driven distribution of computation is essential even when there are no limitations on the availability of computational resources in one location. The article provides detailed results on distributed server architectures for two of these real-time flows, state information and immersive voice communication. It also identifies a generic set of requirements for the underlying network and server infrastructure to support these applications and propose a new design, called switched overlay networks, for this purpose.

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Section: Central Audio Servermentioning

confidence: 99%

“…In [4] a correlation parameter has been defined to model the relationship between the distribun n n n …”

Section: Latency-driven Distribution Of the Audio Servermentioning

confidence: 99%

Latency-driven distribution: infrastructure needs of participatory entertainment applications

et al. 2005

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“…It is important to take this large geographical spread into account in the design of the service so as not to excessively degrade performance in terms of delay and resource usage. More detailed examinations of this issue can be found in [3] [7], which discuss the need for distributed servers and different server placement techniques.…”

Section: Design Requirements Perceived Bottlenecks and Assumptionsmentioning

confidence: 99%

“…For a large (addressing C1) and geographically distributed virtual world we assume that several separate SCSs will be used. Previous work [3] has shown that it is advantageous to distribute these servers geographically based upon the physical locations of the user base to improve delay performance for interactive voice communications. The VE client and VE server (B4 and B5) are outside the scope of this paper.…”

Section: System Architecturementioning

confidence: 99%

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DICE: internet delivery of immersive voice communication for crowded virtual spaces

Boustead

Safaei

Dowlatshahi

IEEE Proceedings. VR 2005. Virtual Reality, 2005.

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This paper develops a scalable system design for the creation, and delivery over the Internet, of a realistic voice communication service for crowded virtual spaces. Examples of crowded spaces include virtual market places or battlefields in online games. A realistic crowded audio scene including spatial rendering of the voices of surrounding avatars is impractical to deliver over the Internet in a peer-to-peer manner due to access bandwidth limitations and cost. A brute force server model, on the other hand, will face significant computational costs and scalability issues. This paper presents a novel server-based architecture for this service that performs simple operations in the servers (including weighted mixing of audio streams) to cope with access bandwidth restrictions of clients, and uses spatial audio rendering capabilities of the clients to reduce the computational load on the servers. This paper then examines the performance of two components of this architecture: angular clustering and grid summarization. The impact of two factors, namely a high density of avatars and realistic access bandwidth limitations, on the quality and accuracy of the audio scene is then evaluated using simulation results. ABSTRACTThis paper develops a scalable system design for the creation, and delivery over the Internet, of a realistic voice communication service for crowded virtual spaces. Examples of crowded spaces include virtual market places or battlefields in online games. A realistic crowded audio scene including spatial rendering of the voices of surrounding avatars is impractical to deliver over the Internet in a peer-to-peer manner due to access bandwidth limitations and cost. A brute force server model, on the other hand, will face significant computational costs and scalability issues. This paper presents a novel server-based architecture for this service that performs simple operations in the servers (including weighted mixing of audio streams) to cope with access bandwidth restrictions of clients, and uses spatial audio rendering capabilities of the clients to reduce the computational load on the servers. This paper then examines the performance of two components of this architecture: angular clustering and grid summarization. The impact of two factors, namely a high density of avatars and realistic access bandwidth limitations, on the quality and accuracy of the audio scene is then evaluated using simulation results.

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Multimedia Traffic Load Distribution in Massively Multiplayer Online Games

Kim

Chon

2006

Information Networking. Advances in Data Communications and Wireless Networks

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Comparison of delivery architectures for immersive audio in crowded networked games

Cited by 21 publications

References 7 publications

Latency-driven distribution: infrastructure needs of participatory entertainment applications

Latency-driven distribution: infrastructure needs of participatory entertainment applications

DICE: internet delivery of immersive voice communication for crowded virtual spaces

Multimedia Traffic Load Distribution in Massively Multiplayer Online Games

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