Improved voice quality with the combination of transport layer & audio codec for wireless devices

Khalifa, Othman Omran and Roslin, Raihan Jannati and Bhuiyan, Sharif Shah Newaj (2019) Improved voice quality with the combination of transport layer & audio codec for wireless devices. Bulletin of Electrical Engineering and Informatics, 8 (2). pp. 667-675. ISSN 2089-3191 E-ISSN 2302-9285

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Abstract

Improving voice quality over wireless communication becomes a demanding feature for social media apps like facebook, whatsapp and other communication channels. Voice-over-internet protocol (VoIP) helps us to make quick telephone calls over the internet. It includes various mechanism which are signaling, controlling and transport layer. Over wireless links, packet loss and high transmission delay damage voice quality. Here VoIP quality will be measured by three main elements which are signaling protocol, audio codec and transport layer. To improve the overall voice quality, we need to combine these three elements properly to get the best score. Otherwise perceptual speech quality will not be the right tool to measure the voice quality. Here we will use Mean Opinion Score (MOS) for calculated jitter values and end to end delay. At the end, best combination of audio codec & signaling protocol produced the quality speech.

Item Type:	Article (Journal)
Additional Information:	4119/72091
Uncontrolled Keywords:	Audio codec, Codec scheme, SIP, VoIP,
Subjects:	T Technology > T Technology (General)
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User:	Prof. Dr Othman O. Khalifa
Date Deposited:	13 May 2019 11:59
Last Modified:	11 Jun 2020 11:44
URI:	http://irep.iium.edu.my/id/eprint/72091

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