CAJ | 학술논문

为有效地描述噪声音色对飞机舱内声品质的影响，开展了3组主观评价实验：不相似度评价、语义细分和偏好度成对比较。首先，不相似评价实验表明，飞机舱内噪声的音色可由一个4维空间表示；然后，回归分析发现后2个维度与语义细分尺度具有关联，其中维度3可描述为＂轰鸣的＂和＂低沉的＂，而维度4可描述为＂刺耳的＂和＂有节奏的＂；接着，利用4个声学参数（噪度、ERB谱峰度、短时谱偏度和ERB谱变化）得到了音色空间每个维度的定量表达；最后，通过分析被试偏好度和4个音色参数间的关系，发现偏好度较高的声音具有较少的线谱、随机性较强，同时其频谱具有平坦对称的分布。
위유효지묘술조성음색대비궤창내성품질적영향，개전료3조주관평개실험：불상사도평개、어의세분화편호도성대비교。수선，불상사평개실험표명，비궤창내조성적음색가유일개4유공간표시；연후，회귀분석발현후2개유도여어의세분척도구유관련，기중유도3가묘술위＂굉명적＂화＂저침적＂，이유도4가묘술위＂자이적＂화＂유절주적＂；접착，이용4개성학삼수（조도、ERB보봉도、단시보편도화ERB보변화）득도료음색공간매개유도적정량표체；최후，통과분석피시편호도화4개음색삼수간적관계，발현편호도교고적성음구유교소적선보、수궤성교강，동시기빈보구유평탄대칭적분포。
In order to describe the influences of noise timbre on aircraft cabin sound quality, three groups of sub?jective evaluation experiments were conducted, including dissimilarity evaluation, semantic differential, and prefer?ence comparison. Firstly, the results of dissimilarity evaluation indicated that the timbre of aircraft cabin noises could be described with a four?dimensional space. Secondly, the regression analysis revealed that the latter two di?mensions were related to semantic scales, in which dimension 3 was interpreted as roaring and muffled, and dimen?sion 4 was interpreted as harsh and rhythmic. Thirdly, four acoustic parameters ( noisiness, ERB spectral kurtosis, short?time spectral skewness, and ERB spectral variation) were derived to obtain the quantitative interpretation of each dimension. Finally, by analyzing the relationship between the preference scores on the one hand and the four timbre parameters on the other hand, it was illustrated that a preferable sound should have almost no tones and was random, while its spectrum should possess a flat and symmetrical distribution.