行为学方法测试听觉响度感知的时间积分效应

发布时间：2018-12-06 14:57

【摘要】：针对音长对语音响度感知的影响即时间积分效应,采用行为学测试方法,包括量值估计法、自适应迫选法、多模态匹配法,并对多模态匹配法进行了改进,将颜色感知应用于响度评估中。为了定量分析响度感知的时间积分效应,采用指数函数对响度感知随音长的变化趋势进行了数学建模。作为参考,将1kHz纯音也用于响度感知时间积分效应的实验中,以便与复音的实验结果进行对照比较。另外,不同的测试方法间也进行了比较分析,评价参数包括单个被试内的重复测试方差、被试间的个体差异和实验时间。实验结果显示:元音的响度感知时间积分效应与纯音的结果相似,即响度随音长有先逐渐增大、后趋于饱和的趋势,且建模分析得到的时间常数均在200ms左右。改进的跨模态匹配方法在实验稳定性和高效性上均具有优势。
[Abstract]:In view of the effect of pitch length on speech loudness perception, which is the time integral effect, the behavioral testing methods, including the quantitative estimation method, the adaptive forced selection method and the multi-mode matching method, are adopted, and the multi-modal matching method is improved. Color perception is applied to loudness evaluation. In order to quantitatively analyze the temporal integral effect of loudness perception, the exponential function is used to model the changing trend of loudness perception with sound length. As a reference, 1kHz pure tone is also used in the experiment of loudness perception time integral effect, so as to compare with the experimental results of polyphony. In addition, different test methods were compared and analyzed. The evaluation parameters included repeated test variance, individual differences and experimental time. The experimental results show that the loudness perception time integral effect of vowels is similar to that of pure tones, that is, the loudness increases first and then tends to saturation with sound length, and the time constants obtained by modeling analysis are all about 200ms. The improved cross-modal matching method has advantages in both experimental stability and efficiency.
【作者单位】：清华大学生物医学工程系;清华大学深圳研究生院;
【基金】：国家自然科学基金资助项目(61271133)
【分类号】：R318.04

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