1
Scope
2 References
3 Definitions
4 Abbreviations and acronyms
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
13 Use of
P.862.1 and P.862.2 use for EVRC type of codecs and evaluation of CDMA networks
14 Comparing objective with
subjective score
Appendix I – Reference values for objective quality derived by
ITU-T Recommendation P.862
for ITU-T/GSM standard codecs
I.1 Reference value
sources
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 measurement 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