Abstract
PESQ is the standard for intrusive objective user perceived speech quality measurement adopted by the International Telecommunication Union (ITU-T), recommendation P.862. Many VoIP applications use adaptive jitter buffering playout algorithms to offset the effects of variable packet delay in a congested network.. This results in frequent time shifting of output by adjusting the gaps between talkspurts. Such adjustments are presumed to have negligible impact on perceived QoS and PESQ employs a time alignment process to remove such adjustments before evaluating objective QoS. In this paper we generate a series of time shifting profiles that reflect diverse network conditions and differing adaptive jitter buffer algorithms settings. We then evaluate the effectiveness of PESQ in identifying and removing such time shifting in advance of QoS testing.
| Original language | English (Ireland) |
|---|---|
| Title of host publication | Quantifying the effectiveness of PESQ (Perceptual Evaluation of Speech Quality), in coping with frequent time shifting. |
| Number of pages | 4 |
| Publication status | Published - 1 Oct 2011 |
Authors (Note for portal: view the doc link for the full list of authors)
- Authors
- Stapleton, O,Melvin, H,Pocta, P,Holub, J,Smid, R