基于语义细分的车内声品质模糊综合评价

针对传统的语义细分法难以在声品质主观评价试验中获得评价对象整体感受择优排序的不足,提出了一种基于语义细分的声品质主观模糊综合评价方法,建立了适合于车内声品质主观评价的声音属性评价指标,确定了声音属性的结构及层次划分,根据不同试验确定了声音属性的关注程度各级指标权重。以在某轿车车内采集到的15个噪声样本为评价对象,分别利用该方法和成对比较法对声音的"豪华感"进行主观评价试验,并对评价得分进行排序比较。结果表明:本文提出的声品质主观模糊综合评价方法可在有效地维持评价主体原有任务量不变的情况下,准确地得到声音样本感知属性的评价等级隶属关系,以及声音样本整体主观感受评价得分的择优排序。

Fuzzy comprehensive evaluation of vehicle interior sound quality based on semantic differential method

A new method of fuzzy comprehensive evaluation on the vehicle interior sound quality subjective evaluation was proposed based on the semantic differential to overcome the shortcoming of the traditional semantic differential method which is inefficient to rank the results of overall perception of sound samples in sound quality subjective evaluation.The sound characteristic evaluation indexes of vehicle interior sound quality subjective evaluation were established.The structure and the hierarchy of the fuzzy comprehensive evaluation were defined based on the evaluation index system of the semantic differential method.The weights of the evaluation indexes were obtained according to the importance of sound characteristics in different subjective evaluation tests.Taking 15 sound samples acquired from a passenger car as evaluation objects,and the sound "luxury" as the evaluation index,subjective evaluation comparison tests between the paired comparison method and the fuzzy comprehensive evaluation method were performed,and the evaluation results were ranked.The results showed that the proposed subjective fuzzy comprehensive evaluation method can accurately provide the membership of evaluation ranking of sound sample perception characteristic and the ranks of the sound sample overall subjective perception under the condition of keeping the same evaluation workload.