Study of the acoustic measures' constancy of sustained vowels consecutive phonations in women without vocal complaint and women with dysphonia

Revista da Sociedade Brasileira de Fonoaudiologia

Behlau, Mara Suzana¹  Gama, Ana Cristina Côrtes¹  Universidade Federal de Minas Gerais, Belo Horizonte, Brasil¹  Diretora do Centro de Estudos da Voz, São Paulo, Brasil¹ 

关键词: Voice;    Voice disorders;    Speech acoustic;    Phonation;    Women;   

DOI  :  10.1590/S1516-80342009000100004

来源: Sociedade Brasileira de Fonoaudiologia

【 摘 要 】

PURPOSE: To evaluate the constancy of the acoustic measures fundamental frequency, percentage jitter, frequency perturbation quotient (FPQ), shimmer (dB), percentage shimmer, amplitude perturbation quotient (APQ), and harmonic-to-noise ratio (HNR), obtained from consecutive phonations of a sustained vowel, in women without vocal complaint and women with dysphonia.METHODS: The selected acoustic parameters were assessed in three different groups: 20 women without vocal complaint, 20 women with dysphonia and vocal nodules, and ten women with dysphonia and Reinke's edema. The acoustic analysis was carried out using the Multi-Speech Model 3700 computer program, from Kay Elemetrics®. Recordings were made of a sustained /ε/ vowel, produced 15 consecutive times.RESULTS: The values of fundamental frequency showed statistically significant variability up to the 6th token for the group without vocal complaint and for the group with dysphonia and vocal nodules. Values of jitter, FPQ, shimmer (dB), percentage shimmer, APQ and HNR didn't show significant differences in any of the groups.CONCLUSIONS: Acoustic measures of different consecutive phonations of the same sustained vowel are constant, except for fundamental frequency, which can increase during the first phonations of individuals without vocal complaint and subjects with dysphonia and vocal nodules.

【 授权许可】

Unknown