Effects of acoustic modification on perception of speaker characteristics for sustained vowels
Effects of acoustic modification on perception of speaker characteristics for sustained vowels
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DOI：
10.1250/ast.28.434
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发表时间：
2007-11
影响因子：
0.7
通讯作者：
T. Kitamura;T. Saitou
中科院分区：
文献类型：
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作者：
T. Kitamura;T. Saitou
根据Thurstone配对比较方法，测量了声学特性对说话人身份感知的贡献的间隔尺度。在实验中，几个声学性质的持续元音/a/发出的10名男性发言人修改和这些影响的感知接近的发言人的特点进行了调查。还测量了刺激的声音质量的间隔尺度，以确认声音质量的劣化是否影响结果。结果表明，对说话人身份的感知贡献由大到小依次为语音频谱的高频部分、声门源的频率特性、基音频率的平均值、幅度和基音频率的时间模式，这表明说话人内部特性的变化越小，对说话人身份的感知越重要。然而，有一个很强的正相关性的间隔尺度的接近度的扬声器特性和声音质量的刺激暗示声音质量可能会影响到实验结果。
An interval scale for contribution of acoustic properties to perception of speaker identity was measured according to Thurstone paired-comparison methodology. In the experiments, several acoustic properties of sustained vowel /a/ uttered by 10 male speakers were modified and those effects on perception of closeness of speaker characteristics were investigated. An interval scale for sound quality of the stimuli was also measured in order to confirm whether the degradation of sound quality affects the results. The results showed that the order of perceptual contribution is speech spectra in higher frequency region, the frequency properties of the glottal source, the mean of the pitch frequency and time-pattern of the amplitude and pitch frequency in decreasing order representing the smaller intra-speaker variation of the properties the more important to perception of speaker identity. However, there is a strong positive correlation between interval scales of closeness of speaker characteristics and sound quality of the stimuli implying that sound quality might affect to the experimental results.