Adaptive grouped paired comparison in subjective sound quality evaluation

摘要

In the field of subjective sound quality evaluation, Paired Comparison (PC) experiment is widelyrnused. However, the weakness that time consumption grows with square of the number of samplesrnmakes the evaluation of large quantity of samples unrealistic. On the basis of Grouped PairedrnComparison (GPC) in which improper reference samples may be chosen, An Adaptive GroupedrnPaired Comparison (AGPC) design is proposed to greatly decrease time required and to avoid thernreduction of the precision by adaptively adjusting the reference samples or seeds by using priorrninformation from results of last grouped comparison. In this study, the mathematic theory andrnimplementation method were given, including the statistical model and optimality criterion. Thernperformance of AGPC method was compared against that of conventional PC method throughrnthe computer simulations.