Rec. ITU-T Series P Supplement 3 (03/1993) … MODELS FOR PREDICTING TRANSMISSION QUALITY FROM OBJECTIVE MEASUREMENTS
FOREWORD
CONTENTS
INTRODUCTION
1 Transmission rating models
    1.1 Introduction
    1.2 Transmission rating models
    1.3 Subjective opinion models
2 Prediction of transmission qualities from objective measurements
    2.1 Types of model
    2.2 Model and programs: SUBMOD, CATPASS and CATNAP
    2.3 Situation to be represented
    2.4 Outline of the model
    2.5 Calculation of loudness and loudness ratings
    2.6 Calculation of listening effort score
    2.7 Calculation of Conversation Opinion Score
    2.8 Evaluation of other subjective measures of performance
    2.9 Correspondence between calculated and observed values
    2.10 Incorporating miscellaneous degradations
    2.11 Practical use of the model
3 Calculation of transmission performance from objective measurements by the information index method
    3.1 Introduction – Type of model
    3.2 Application to digital transmission
    3.3 Application to analogue transmission
    3.4 Possible extensions
4 Overall Performance Index model for Network Evaluation (OPINE)
    4.1 Introduction
    4.2 Outline of the model
    4.3 Configuration of OPINE
    4.4 Symbol types and values
Annex A (reference to 1.1) … Opinion ratings of transmission impairments
A.1 Introduction
A.2 Overall loudness rating and circuit noise
A.3 Quantization noise from PCM processes
A.4 Bandwidth
A.5 Listener echo
A.6 Talker echo
A.7 Sidetone
Annex B (reference to 2.9) … Calculated transmission performance of telephone networks
B.1 Introduction
B.2 HRC 1 – Own exchange call
B.3 HRC 2 – Limiting national call
B.4 HRC 3 – Long distance call with a PCM junction
B.5 HRC 4 – Asymmetry of transmission loss
B.6 HRC 5 – Effect of room noise
B.7 HRC 6 – Effect of circuit noise and bandlimiting
B.8 HRC 7 – Multiple calculations with random selection of items
B.9 HRC 8 – Example of the use of CATNAP to meet a design criterion
B.10 HRC 9 – Effect of varying line length
Annex C (reference to 4.3.1.2) … Noise spectrum calculation
Annex D (reference to 4.3.3) … MOS calculation examples
Annex E (reference to 4.3.2.2) … Derivation of equation (4-16)
Annex F (reference to 4.3.3) … Psychological evaluation model
F.1 Psychological model for evaluation
F.2 Derivation of equation (4-35) from equation (4-34)
Annex G … Objective method of estimating the quality of speech degraded by non-linear distortion
G.1 Introduction
G.2 Scope
G.3 Measurement signal
G.4 Preprocessing
G.5 Objective parameters
G.6 Estimation process
Appendix I (reference to 3.2.2) … Computer programs used
I.1 Computer program 1
I.2 Computer program 2
Appendix II (reference to 3.2.2 and 3.3)
Appendix III (reference to 3.3.2) … Calculation of the DATA in Appendix II from primary data
III.1 Definition of the primary data
III.2 Relations
III.3 Example
References