WLAN Technologies for Audio Delivery

Tatlas, Nicolas-Alexander; Floros, Andreas; Zarouchas, Thomas; Mourjopoulos, John

doi:https://doi.org/10.1155/2007/12308

Advances in Multimedia

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Multimedia Transmission over Emerging Wireless Technologies

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Research Article | Open Access

Volume 2007 | Article ID 012308 | https://doi.org/10.1155/2007/12308

WLAN Technologies for Audio Delivery

Nicolas-Alexander Tatlas,¹Andreas Floros,²Thomas Zarouchas,¹and John Mourjopoulos¹

Academic Editor: Tasos Dagiuklas

Received21 Apr 2007

Revised30 Aug 2007

Accepted27 Dec 2007

Published17 Feb 2008

Abstract

Audio delivery and reproduction for home or professional applications may greatly benefit from the adoption of digital wireless local area network (WLAN) technologies. The most challenging aspect of such integration relates the synchronized and robust real-time streaming of multiple audio channels to multipoint receivers, for example, wireless active speakers. Here, it is shown that current WLAN solutions are susceptible to transmission errors. A detailed study of the IEEE802.11e protocol (currently under ratification) is also presented and all relevant distortions are assessed via an analytical and experimental methodology. A novel synchronization scheme is also introduced, allowing optimized playback for multiple receivers. The perceptual audio performance is assessed for both stereo and 5-channel applications based on either PCM or compressed audio signals.

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Copyright

Copyright © 2007 Nicolas-Alexander Tatlas et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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