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Convention Paper

Subjective Audio Quality with Multiple Description Coding in a WLAN 802.11-Based Multicast Distribution Network

Authors: Purat, Marcus; Ritter, Tom

AES Convention 126 · Paper 7755 · May 2009

Abstract

This paper presents a number of results of a study of different methods to mitigate the impact of packet loss on the

subjective quality in a wireless distribution network of compressed high fidelity audio. The system was simulated in

Matlab based on parameters of an 802.11a WLAN in multicast-mode and the Vorbis codec. The performance of

multiple description coding in terms of expected subjective audio quality and its impact on the data rate is quantified

and compared to other receiver based packet loss concealment methods. The optimum set of parameters for a

multiple description coder which achieves the best subjective audio quality for a given packet loss rate in the

simulated system is presented.

Details

Published in
AES Convention 126
AES Convention
126
Paper number
7755
Publication date
May 6, 2009
Session subject
Signal Processing
Affiliation
TFH Berlin, Berlin, Germany (See document for exact affiliation information.)
Type
Convention Paper