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Audio quality in lossy networks for media‐specific forward error correction schemes
Author(s) -
Inoie A.
Publication year - 2014
Publication title -
international journal of communication systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.344
H-Index - 49
eISSN - 1099-1131
pISSN - 1074-5351
DOI - 10.1002/dac.2361
Subject(s) - computer science , forward error correction , lossy compression , network packet , computer network , router , buffer overflow , offset (computer science) , sound quality , algorithm , queueing theory , packet loss , real time computing , speech recognition , decoding methods , artificial intelligence , programming language
SUMMARY A media‐specific forward error correction (FEC) is used to prevent the loss of audio packets due to noise or interference in the transmission and buffer overflow in the router. In this FEC scheme, for n th packet, the redundant data are added in ( n + ϕ )th packet where ϕ is called the offset. In this paper, we consider an M/M/1/ K queueing system and derive some simple expressions for calculating the audio qualities of the aforementioned schemes. We analytically and numerically show some counter‐examples and characteristics for these FEC schemes by using our analytical model. Copyright © 2012 John Wiley & Sons, Ltd.