Acoustic properties of English fricatives
Acoustic properties of English fricatives
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英语摩擦音的声学特性
DOI：
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发表时间：
1998
期刊：
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通讯作者：
S. Wong
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作者：
A. Jongman;J. Sereno;Ratree Wayland;S. Wong
语音研究中的一个基本问题涉及语音信号的局部（静态）或全局（和/或动态）属性是否更成功地捕获发音位置的区别。虽然大多数关于发音位置的研究都调查了塞音，但不确定这些属性是否可以成功地对摩擦音进行分类。在本研究中，使用静态和动态指标来研究摩擦音的发音位置。静态指标包括频谱峰值位置、噪声持续时间和噪声幅度；动态指标包括相对振幅、轨迹方程和谱矩。二十位说话者发出擦音 /f、v、θ、ð、s、z、∫、ş/，后面跟着元音 /i、e、ae、ɑ、o、u/。基于方差分析和判别分析的初步结果表明，所有指标都可以区分非齿擦音 /f、v、θ、ð/ 和齿擦音 /s、z、∫、ş/。此外，谱矩将 /s、z/ 与 /∫、ş/ 分开的准确度约为 95%，将 /f、v/ 与 /θ、ð/ 分开的准确度约为 65%，而轨迹方程仅用于将唇齿音 /f、v/ 与所有其他摩擦音分开。指标的准确性还将与人类感知数据进行比较。 [工作由 NIH 支持。]
A fundamental issue in speech research concerns whether distinctions in terms of place of articulation are more succesfully captured by local (static) or global (and/or dynamic) properties of the speech signal. While most studies of place of articulation have investigated stop consonants, it is uncertain whether these properties can successfully classify fricatives. In the present study, both static and dynamic metrics were used to investigate place of articulation in fricatives. Static metrics include spectral peak location, noise duration, and noise amplitude; dynamic metrics include relative amplitude, locus equations, and spectral moments. Twenty speakers produced the fricatives /f, v, θ, ð, s, z, ∫, ȝ/ followed by the vowels /i, e, ae, ɑ, o, u/. Preliminary results based on ANOVA and discriminant analysis suggest that all metrics could distinguish nonsibilant /f, v, θ, ð/ from sibilant /s, z, ∫, ȝ/. In addition, spectral moments separated /s, z/ from /∫, ȝ/ with about 95% accuracy and /f, v/ from /θ, ð/ with about 65% accuracy while locus equations only served to separate labiodental /f, v/ from all other fricatives. Accuracy of the metrics will also be compared to human perception data. [Work supported by NIH.]