Presentation	2002/7/4 Evaluation of VoIP Speech Quality using Objective Speech Quality Assessment "PESQ" Ken NAKAOKA, Masami KATO,
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Abstract(in English)	Network conditions such as packet loss and delay jitters greatly affect the end-to-end speech quality of VoIP (Voice over IF). For this reason, it is necessary to clarify how these network conditions affect the speech quality, and to guarantee the speech quality by applying QoS (Quality of Service) management technology in network and VoIP terminals. This paper represents evaluation results of speech quality, which is measured by objective speech quality assessment "PESQ" (Perceptual Evaluation of Speech Quality) when the network conditions change. In addition to the PESQ score, this paper shows the MOS (Mean Opinion Score) which is derived from the subjective listening tests. This paper also discusses the correlation between PESQ and MOS, especially when the packet loss and delay jitters occur.
Keyword(in Japanese)	(See Japanese page)
Keyword(in English)	VoIP / speech quality / PESQ / MOS
Paper #	CQ2002-57
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Conference Information
Committee	CQ
Conference Date	2002/7/4(1days)
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Paper Information
Registration To	Communication Quality (CQ)
Language	JPN
Title (in Japanese)	(See Japanese page)
Sub Title (in Japanese)	(See Japanese page)
Title (in English)	Evaluation of VoIP Speech Quality using Objective Speech Quality Assessment "PESQ"
Sub Title (in English)
Keyword(1)	VoIP
Keyword(2)	speech quality
Keyword(3)	PESQ
Keyword(4)	MOS
1st Author's Name	Ken NAKAOKA
1st Author's Affiliation	SANYO Electric Co., Ltd.()
2nd Author's Name	Masami KATO
2nd Author's Affiliation	SANYO Electric Co., Ltd.
Date	2002/7/4
Paper #	CQ2002-57
Volume (vol)	vol.102
Number (no)	190
Page	pp.pp.-
#Pages	6
Date of Issue