Analyzes of Nonlinear Vocal Variability and Controllability of Neural Voice Disorders

非线性声音变异性和神经声音疾病可控性分析

• 批准号: 07832006
• 负责人: IMAIZUMI Satoshi
• 金额: $ 1.66万
• 依托单位: University of Tokyo
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1995
• 资助国家: 日本
• 起止时间: 1995 至 1996
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-07832006/
• 关键词: Voice disorder; Neural voice disorders; SPD; Vocal variability; Voice contrallability; Acoustic analysis; Fractal dimension; Nonlinearlity; 非線形理論; 音声振戦; 可制御性

The variability and controllability of vocal fundamental frequency (F0) are investigated by analyzing the acoustic and perceptual characteristics of sustained vowel samples recorded from patients with spasmodic dysphonia (SPD) as well as patients with various types of laryngeal disorders and normal controls. All the pathological groups show larger variations in F0 or lower controllability than the normal controls. The voice segments perceptually judged as non-sporadic show significantly larger variations in F0 than the normal controls. From the voice segments perceptually judged as sporadic, instantaneous changes in F0 or in amplitude, chaotic changes in voice waveform such as bifurcations are observed. Based on the obtained results, a model of normal and disordered voice control mechanism is proposed, in which morphological and neural abnormalities affect voice variability. The acoustic analysis method described here is found beneficial in analyzing voice variability and controllability, and can provide useful information to know normal and disordered voice control mechanisms.

通过分析从痉挛性发声困难（SPD）患者以及各种类型的喉部疾病患者和正常对照中记录的持续元音样本的声学和感知特征，研究了声音基频（F0）的可变性和可控性。所有病理组均比正常对照组表现出更大的F0变化或更低的可控性。感知上判断为非零星的语音片段显示出比正常对照显着更大的 F0 变化。从感知上判断为F0或幅度的零星、瞬时变化的语音片段中，观察到语音波形的混乱变化，例如分叉。基于所获得的结果，提出了正常和紊乱语音控制机制的模型，其中形态和神经异常影响语音变异性。发现这里描述的声学分析方法有利于分析语音变化性和可控性，并且可以提供有用的信息来了解正常和无序的语音控制机制。

项目成果

Hirose, H., Imaizumi, S.and Yamori, M.: "Voice quality in patients with neurological disorders." Vocal Fold Physiology, Voice Quality Control, edited by O.Fujimura and M.Hirano, Singular Publishing Group, Inc. San Diego. 235-248 (1995)

Hirose, H.、Imaizumi, S. 和 Yamori, M.：“神经系统疾病患者的声音质量。”

Imaizumi,S.,et.al.: "Listener Adaptive Characteristics of Vowel Devoicing in Japanese Dialogue" J.Acoust.Soc.Amer.98. 768-778 (1995)

Imaizumi,S.,et.al.：“日语对话中元音清音的听者适应性特征”J.Acoust.Soc.Amer.98。

今泉敏: "病的音声の声質" 日本音響学会. 51. 887-892 (1995)

Satoshi Imaizumi：“病态语音的语音质量”日本声学学会 51. 887-892 (1995)。

Imaizumi,S.,et al.: "Listener Adaptive Characteristics of Vowel Devoicing in Japanese Dialogue" J.Acoust.Soc.Amer.98. 768-778 (1995)

Imaizumi,S.,et al.：“日语对话中元音清音的听者适应性特征”J.Acoust.Soc.Amer.98。

Shimura, Y.and Imaizumi, S.: "Listener and context dependency in the perception of emotionalaspects of infant voice." Acta Paediatrica Japonica.38. 648-656 (1996)

Shimura, Y. 和 Imaizumi, S.：“婴儿声音情感方面感知中的听众和情境依赖性。”