This paper presents an analysis of the relation between IP channel characteristics and final voice transmission
quality. The NISTNet emulator is used for adjusting the IP channel network. The transmission quality criterion
is an MOS parameter investigated using the ITU-T P.862 PESQ, future P.863 POLQA and P.563 3SQM algorithms.
Jitter and packet loss influence are investigated for the PCM codec and the Speex codec.
en
dc.language.iso
en
cze
dc.subject
POLQA
cze
dc.subject
speech quality
en
dc.subject
MOS
cze
dc.subject
packet loss
en
dc.subject
jitter
en
dc.title
Evaluation of Objective Speech Transmission Quality Measurements in Packet-based Networks