1
Scope
2 References
3 Definitions
4 Abbreviations
5 Conventions
6
General remarks
6.1 Testing factors
6.2 Applications
7 Characteristics of the reference
signals
7.1 Length
of signal
7.2 Active speech
7.3 Temporal structure
7.4 Active speech level
7.5 Application of artificial voice
7.6 Requirements for speech recordings
7.7 Variation in talker and speech content
7.8 Leading and trailing silences
7.9
Pre-filtering
7.10 Noise floor
7.11 Implementations Issues
8 Characteristics of the degraded signal
to be assessed
8.1 Difference in active speech duration
between reference and degraded speech signal
8.2 Active speech level
8.3 Difference in duration of leading and
trailing silence between reference and degraded speech
9 Characteristics of signal insertion and
capturing paths
9.1 Influence of measurement circuits and
test configuration in the insertion path
9.2 Influence of measurement circuits and
test configuration in the capture path
10 Analysis
of the results
10.1 Averaging the measurement results
10.2 Reliability of the PESQ measurements'
results
10.3 Accuracy values of the PESQ measurements
10.4 Interpretation of the accuracy's
results
11 Report
of results
12 Guidance
for using P.862.2 wideband extension to P.862
Appendix I
– Reference values for objective quality derived by ITU-T
Rec. P.862 for ITU-T/GSM standard codecs
I.1
ITU-T
Rec. P.862.1 reference values were
calculated for the following codec/MNRU conditions by using the speech database
in Annex B/P.501:
I.2
Pre-processing of source speech
I.3
Processing of G.711
I.4
Processing of G.726
I.5
Processing of G.728, G.729,
Annex A/G.729 , and G.723.1
I.6
Processing of MNRU
Appendix II
– Test
databases for P.862/P.862.1
Appendix III
– Report of P.862/P.862.1 measurements
III.1 Report and interpretation of the
average PESQ results
III.2
Report and interpretation of individual PESQ measurements'
results
Appendix IV
– Calibration method for proprietary interfaces
IV.1 Calibration of the transmit level (near
end) of the test equipment
IV.2 Calibration of the receive level (far
end) of the test equipment
BIBLIOGRAPHY