声品质成对比较主观评价的数据检验及判据

Statistical validation and criterion for paired comparison data in sound quality evaluation

针对声品质主观评价成对比较法试验结果统计分析中,采用Kendall一致性系数进行数据有效性判断的不足,从检验成对比较试验数据中存在的相同声事件、不同回放次序以及三角循环等三种误判出发,分析了评价试验的三角循环误判的发生情况,提出了三角循环误判次数的准确计算方法。在成对比较评价试验数据有效性检验中,综合考虑了三种误判情形,提出了判断数据有效性的计权一致性系数判据。最后,将数据检验方法和判据应用于车内噪声的声品质成对比较评价数据的分析,获得了分析结果与Bradley-Terry模型拟合结果较好的相关性,验证了判据的可靠性。

In statistical analysis of paired comparison data in sound quality evaluations, the commonly adopted Kendall＇s coefficient of consistency criteria is not sufficient for assessment of judging errors. Based on the analysis of misjudging rates in the same-sound-event-comparison, the different-replay-order-comparison and the circular triads, an accurate calculation model for circular triads is proposed. For validation of jurors＇ test data, these three types of errors are considered, and a criterion called weighted factor of consistency is developed. The proposed methods and criterion have been applied to the analysis of subjective data of the paired comparison for car interior sound quality evaluation. Good agreements between analyzed results and Bradley-Terry model fitting results are acquired, and rightness of proposed criterion has been proved.