Relationships between syllable articulation/word intelligibility and psychological evaluation of external noise

首先，本研究在无意义的稳态噪声下，对日语单音节和/或单词声信号的听音进行了研究：噪声带来的烦扰，音频信号的言语可听度，以及听力得分。具体地说，采用不同的音频信号和噪声进行了听力心理实验。根据实验结果，通过引入8个指标，定量地考虑了上述三个方面与音频信号和噪声的幅频特性之间的关系。取得了以下研究成果：1.当使用SNA时，虽然它适用于评估噪声的心理印象，但不适用于音频信号的心理印象和听力得分。当使用SI时，只有在单音节声音信号的情况下，这三个方面是对应的。当使用WSPD时，它对这三个方面的评价最好。从对噪声和音频信号的心理印象的估计和/或预测问题的考虑，以及用WSPD得到的音频信号的听力分数，从实验上证实了该方法的有效性和适用性，得到了合理的结果。

First, this study focuses on the following three aspects in the case of listening to Japanese mono-syllable and/or word acoustical signal under the meaningless steady noise : annoyance caused by noise, speech audibility of the audio signal, and the listening score. Concretely, listening psychological experiments using various audio signals and noises were carried out. From the experimental results, relationships between the above three aspects and the amplitude and frequency characteristics of the audio signal and those of noise were considered quantitatively, by introducing eight indices. The following results were obtained.1. When SN_A is used, although it was suitable for evaluating the psychological impression of noise, not suitable with regard to the psychological impression of audio signal and listening score.2. When SI is used, only in the case of mono-syllable acoustical signal, there was a correspondence to the three aspects.3. When WSPD is used, it was the best for evaluating the three aspects.4. From the consideration on the estimation and/or prediction problems of the psychological impressions of noise and audio signal, and the listening score of audio signal, derived by using WSPD, the validity and the applicability were confirmed experimentally, and reasonable results were obtained.