Nemo voice quality MOS

[josef]

Dear all,

pleas find attached:

Nemo Voice Quality White paper

&

Nemo Voice Quality Guide

Contents:

1 THEORETICAL BACKGROUND ..................................................................................................... 3
1.1 OVERVIEW............................................................................................................................... 3
1.2 ITU-T RECOMMENDATIONS ................................................................................................... 3
1.2.1 ITU-T P.800 ........................................................................................................................ 3
1.2.2 PERCEPTUAL MODELING ............................................................................................... 4
1.2.3 ITU-T P.861 ‘PSQM’........................................................................................................... 5
1.2.4 ITU-T P.862 ‘PESQ’ ........................................................................................................... 6
1.3 PERFORMANCE EVALUATION............................................................................................... 7
1.3.1 ALGORITHM COMPARISON ............................................................................................ 7
1.3.2 PESQ SCORE RELIABILITY............................................................................................. 8
2 NEMO VOICE QUALITY................................................................................................................... 9
2.1 OVERVIEW............................................................................................................................... 9
2.1.1 STANDARD COMPLIANCE............................................................................................... 9
2.1.2 NEMO AUDIO MODULE.................................................................................................... 9
2.2 MOBILE-TO-MOBILE TESTING ............................................................................................. 10
2.3 MOBILE-TO-FIXED-TO-MOBILE TESTING ........................................................................... 11

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VOICE QUALITY MEASUREMENTS 4
VOICE QUALITY SYSTEM DESCRIPTION 5
SETTING UP THE SYSTEM 6
CONNECTING NEMO OUTDOOR MMAC2 MULTI DEVICE 6
CONNECTING NEMO OUTDOOR MMAC3 MULTI DEVICE 7
CONNECTING VOICE QUALITY DEVICES 9
MODIFYING THE NEMO AUDIO MODULE (EVOQ) FOR DIFFERENT TERMINALS 14
DEASSEMBLING THE EVOQ MODULE 14
ASSEMBLING THE EVOQ MODULE 15
MAKING VOICE QUALITY MEASUREMENTS 16
MOBILE-TO-MOBILE VQ MEASUREMENTS 16
MOBILE-TO-FIXED-TO-MOBILE VQ MEASUREMENTS 25
APPENDIX 1 31
NEMO SERVER INSTALLATION 31
Audio Test Installation 31
Configuring the Server 32

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