Vocal Loudness Variation With Spectral Slope
Vocal Loudness Variation With Spectral Slope
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DOI：
10.1044/2019_jslhr-19-00018
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发表时间：
2020-01-01
影响因子：
2.6
通讯作者：
Palaparthi, Anil
中科院分区：
文献类型：
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作者：
Titze, Ingo R.;Palaparthi, Anil
目的：本研究解决了人类发声中频谱斜率变化（高次谐波能量）可实现的声音响度变化，并将其与音域分布 (VRP) 中通常报告的声压级 (SPL) 变化进行比较。 方法：主要方法是计算方法。 ISO 标准 226 用于将 SPL 值转换为音素，基频范围为 125 至 1000 Hz，频谱斜率范围为 -3 dB/倍频程至 -12 dB/倍频程。此外，还对人类受试者的VRP进行了回顾性分析，并将实验结果与理论结果进行了比较。结果：VRP中极小范围的SPL变化（小于5 dB）可以产生大范围的响度。每 dB SPL 变化，灵敏度约为 4 个宋音。结论：对于模态音域中的发声，响度变化不能通过以 dB 为单位的 SPL 变化来很好地描述，特别是在高基频处，此时 VRP 中的 SPL 范围变得非常小，但仍然可能出现相当大的响度变化。
Objective: This investigation addresses the loudness variations in sones achievable with spectral slope variations (higher harmonic energy) in human vocalization and compares it to the sound pressure level (SPL) variations typically reported in the voice range profile (VRP).Method: The primary methodology was computational. The ISO standard 226 was used to convert SPL values to sones for a 125- to 1000-Hz range of fundamental frequency and a -3 dB/octave to -12 dB/octave range of spectral slope. In addition, a retrospective analysis of human subjects' VRPs was conducted, and the experimental results were compared to the theoretical results.Results: A very small range of SPL variation (less than 5 dB) in the VRP can produce a large range of loudness. The sensitivity can be on the order of 4 sones per dB SPL change.Conclusion: For vocalization in the modal register, loudness variation is not well described by SPL change in dB, especially at high fundamental frequencies where the SPL range in the VRP becomes very small but sizeable loudness variations are still possible.