Table of Contents

1 Scope            
 2 References  
 3 Definitions   
        3.1 Terms defined elsewhere              
        3.2 Terms defined in this Recommendation      
 4 Abbreviations and acronyms    
 5 Conventions
 6 Crowdsourcing listening-only tests         
        6.1 Database structure          
        6.2 Design of experiment      
        6.3 Listening test procedure
        6.4 Data analysis and reporting of results          
Annex A – Absolute category rating    
        A.1 Opinion scales  
        A.2 Stimulus presentation     
        A.3 Statistical analysis             
Appendix I – Example of job design    
        I.1 Qualification job  
        I.2 Training job          
        I.3 Rating job             
Bibliography