Laboratoire d'Informatique pour la Mécanique et les Sciences de l'Ingénieur, Centre National de la Recherche Scientifique, Université Paris-Saclay, bat 507, Rue du Belvédère, F-91405 Orsay Cedex,
J Acoust Soc Am. 2019 Oct;146(4):EL369. doi: 10.1121/1.5129677.
Vocal effort is a major source of variability in speech processing. The present study examines its spectral effects from calibrated data recorded in 1977. The 97 talkers were instructed to vary their vocal effort in five degrees. Each sequence was represented by its sound level and its 1/3 octave long-term-average spectrum. After normalization to a common arbitrary level, comparing each spectrum to the others demonstrated that the original sound level could be recovered within a 5 dB error margin. A principal component analysis brought out several spectral features involved in the quantitative relationship between spectral shape and sound level.
发声努力是言语处理中变异性的主要来源。本研究从 1977 年记录的校准数据中检查了它的光谱效应。97 位说话者被要求在五个等级上改变他们的发声努力。每个序列都由其声级和 1/3 倍频程长期平均频谱表示。在归一化为一个共同的任意水平后，将每个频谱与其他频谱进行比较，结果表明，原始声级可以在 5dB 的误差范围内恢复。主成分分析揭示了几个与频谱形状和声级之间定量关系有关的光谱特征。
