Adaptive VoIP playout scheduling: assessing user satisfaction

Delay and packet loss dramatically affect the quality of voice-over-IP (VoIP) calls and depend on the playout buffer scheme implemented at the receiver. The choice of playout algorithm can't be based on statistical metrics without considering the perceived end-to-end conversational speech quali...

Full description

Saved in:
Bibliographic Details
Published in:IEEE internet computing 2005-07, Vol.9 (4), p.28-34
Main Authors: Narbutt, M., Kelly, A., Perry, P., Murphy, L.
Format: Article
Language:English
Subjects:
adaptive playout algorithms
Adaptive scheduling
call quality assessment
Computational modeling
Delay effects
Internet telephony
IP networks
jitter compensation
Narrowband
Speech analysis
Speech codecs
Telecommunication computing
Testing
user satisfaction
VoIP
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Delay and packet loss dramatically affect the quality of voice-over-IP (VoIP) calls and depend on the playout buffer scheme implemented at the receiver. The choice of playout algorithm can't be based on statistical metrics without considering the perceived end-to-end conversational speech quality. The authors present a method for evaluating various playout algorithms that extends the E-model concept by estimating user satisfaction from time-varying transmission impairments. This article evaluates several playout algorithms and shows a correspondence between the authors' results and those obtained via statistical loss and delay metrics.
ISSN:1089-7801
1941-0131
DOI:10.1109/MIC.2005.72