采用参考激励信号的语义细分法主观声品质评价(英文)  

Performance of semantic differential method with an anchor stimulus in subjective sound quality evaluation

作　　者：毛东兴[1] 张宝龙 

机构地区：[1]同济大学声学研究所,上海200092 [2]Tenneco中国有限公司,上海201814

出　　处：《声学技术》2006年第6期560-567,共8页Technical Acoustics

基　　金：This work was supported by National Natural Science Foundation of China (No. 10374071)

摘　　要：语义细分法是声品质以及声感知特征研究中最广泛采用的主观评价方法。但对于一些声品质指标,尤其是新提出的指标或评价者认识和观点不完全一致的指标,由于评价者尺度掌握的困难,采用传统语义细分法评价难以获得准确可靠的评价结果。为此,提出了采用参考激励信号的参考语义细分法评价程序,并研究了这种评价程序的性能表现。分析比较了两种语义细分法在评价者的个体重复性、团组一致性以及与成对比较法和计算结果的相关性。研究结果显示,对传统语义细分法难以获得稳定可靠评价结果的参量,参考语义细分法可以显著改善评价实验性能;对传统语义细分法可以获得稳定可靠评价结果的参量,参考语义细分法可以获得一致的评价结果,且改善了一些方面的性能。研究结果证明了采用参考激励信号的参考语义细分法的优越性。Semantic differential （SD） method is a most commonly used method in subjective sound quality and sound perception assessment. For some sound quality indicators, the normal SD method is not easy for jurors to reach at an accurate and reliable judgment, especially for indicators newly developed or the indicator assessed is not unanimously clear and understood for jurors, By introducing an anchor stimulus in SD,a new procedure called anchored semantic differential （ASD） is adopted. Principle of the procedure and its performance is studied. The two procedures are compared at individual＇s repetitivity, juror＇s consistency, and correlation to results acquired by pair comparison method and by calculation with mathematical model. Research result shows, for all the compared items, the ASD procedure has advantage for indicators which normal SD method is hard to obtain accurate results, while in good agreement with SD for those indicators that by applying the conventional SD can also reach at accurate results. Research proved ASD is a preferable procedure in subjective sound quality evaluation test.

关 键 词：语义细分法 参考激励 声品质 可靠性 

分 类 号：O422.8[理学—声学] TB53[理学—物理]