A Study on Psychoacoustical Proximity Between Japanese Monosyllables and its Application for Hearing Impairments

本文提出了一种基于单音节词心理声学接近度图形表示的言语感知障碍定性分析方法。言语测听数据的估计需要对言语感知混淆进行定性分析。这种定性方面的样本可以通过对/do/初级刺激的/ro/和/pu/反应之间的对比来举例说明。/ro/和/pu/都是不正确的，但分配给任何一个的SDS（言语辨别分数）值是相同的。显然，这些不正确的反应之间存在质的对比; /do/to/ro/比/do/ to /pu/具有更大的心理声学接近度。如何解决这一问题是本文研究的重点。心理声学接近度被定义为正常人耳对单音节词混淆的容易程度，并被测量为67个日语单音节词的混淆矩阵，称为“chokuon”。“这个矩阵是根据听力测试构建的， ...更多信息 对26名听力正常的受试者降低刺激水平引起的模糊知觉进行了研究。配置图的单音节的接近值表示的相互距离的混淆矩阵使用非度量多维缩放方法称为SMACOF。使用这些图表，患者对单音节词的感知失败可以通过连接混淆的stumuli和相应的错误反应来简单地记录。该文件表明患者失败的异常性与正常耳朵的混淆程度存在差异。为应用本研究，对53例听力障碍患者在配戴助听器和未配戴助听器时的单音节混淆定性特征进行了对比分析。结果表明，该方法能定性描述助听器对言语感知的影响，为助听器的选配提供了重要信息。少

A practical method for the qualitative analysis of impaired speech perception was developed based on graphical representations of psychoacoustical proximity among monosyllables. Qualitative analysis of speech perception confusion are needed for estimation of data from speech audiometry. A sample of this qualitative aspect can be exemplified by the contrast between /ro/and /pu/ responses to a /do/ primary stimulus. Both /ro/and/pu/ are incorrect, but the SDS (speech discrimination score) value assigned to either would be the same. Clearly, there are qualitative contrasts between these incorrect responses ; /do/to/ro/ has a far greater psychoacoustical proximity than /do/ to /pu/. The solution of this problem was the focus in this study. The psychoacoustical proximity was defined as the degree of ease of confusion among monosyllables for normal ears, and was measured as a confusion matrix among 67 Japanese monosyllables called " chokuon." This matrix was constructed from hearing tests on … More unclear perception induced by lowering stimulus levels for 26 listeners with normal hearing. Configuration graphs of the monosyllables where the proximity values were represented by the mutual distances were made from the confusion matrix using a non-metric multi-dimensional scaling method known as SMACOF. Using these graphs, the perceptual failures for the monosyllables on the part of a patient can be simply documented by connecting confused stumuli and corresponding wrong responses. This documentation indicates the abnormality of a patient's failures in terms of discrepancies from the ease of confusion for normal ears. For the application of this study, the qualitative characteristics of monosyllable confusion for 53 patients with hearing impairment were comparatively analyzed with and without hearing aids. Results show that this method is useful for describing the qualitative effects of hearing aids on speech perception, and that it thus provides importanat information for hearing aid selection. Less