Ambience-Based Voice Over Internet Protocol Quality Testing Model

Abstract

In this paper, we explore a new voice quality management model under ambience environment suitable for voice over internet protocol (VoIP) calls in wireless WLAN 802.11 Linux environment. The system is based on a setup that assimilates environment noise level using noise detector and adaptive audio manager used to tune the audio level and thereby quality is ensured. Further, existing models such as E-model, PESQ model and adaptive model address QoS in a VoIP networking perspective but do not address voice quality management in real time environment to improve voice quality. We propose to use background noise and its associated source information in an adaptive environment to boost user perception, audio level, thereby ensuring quality. This issue is important because in real time, consumers might be interested in mobiles that address ambience effect to determine human audible effect based on environment conditions. The experimental results of the proposed method outperform the existing method in terms of QoS factor metric; we get extensive results with more number of calls.

Keywords:

• Linux mobile
• QoS in Voice over internet protocol
• SIP
• Voice quality management
• Wireless mobile multimedia

Additional information

Notes on contributors

Karthikeyan Vaiapury

Karthikeyan Vaiapury received his B. Tech. in 2003 from School of Engineering and Technology, Bharathidasan University (currently Anna University, Trichy). He received his M.S. (Computer Science) in 2007 from National University of Singapore. Presently he is working as a Software Engineer (R & D) at Mobile Design House, Satyam Computer Services Limited, Singapore. He worked as Lecturer at the School of Engineering and Technology, Bharathidasan University from Oct 2003 to Dec 2004. His current research interests include multimedia information retrieval, visual attention, mobile multimedia and wireless networks. E-mail: [email protected]

Malmurugan Nagarajan

Malmurugan Nagarajan is presently an editor of Journal of Multimedia and Journal of Simulation and Modeling. He has around 21 years of teaching and industrial experience. He worked extensively in audio, video codec development for mobile platforms and well versed with audio and video standards. He is strong in developing tools and system applications and modeling and simulation. His doctoral thesis is on multimedia compression techniques using wavelet variants. Currently he is developing new algorithms and IPs for the components in wireless broadband physical layer at Satyam Computer Services Limited, Singapore. He is also an educationist and held various positions ranging from lecturer to principal in various educational organizations. His area of interest include wavelet variants based signal and image processing, multimedia compression and qatermarking, signal processing algorithm development in telecom domain. E-mail: [email protected]

Sunil Kumar Jain

Sunil Kumar Jain has 12 years experience in SIP/H.323 based applications and VoIP. He has worked extensively on routing protocols like OSPF for IPv4 and IPv6; has vast knowledge and experience on the NAT and firewall devices and their issues with respect to SIP/VoIP on the boundaries of the network. His areas of interest include overall networking domain including wireline as well as wireless networking with major focus on SIP/VoIP applications based on various standards like IETF, PacketCable, True2Way, and SAF for high availability. E-mail: [email protected]