Fundamental Frequency in Speakers of Portuguese for Different Voice Samples

Guimarães, Isabel; Abberton, Evelyn

doi:10.1016/j.jvoice.2004.11.004

Cited by 66 publications

(75 citation statements)

References 36 publications

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“…The mean F0 and standard deviation values seen in two studies 23,24 that analyzed Portuguese and brazilian portuguese speakers found practically identical values as those reported in this study ( Table 2).…”

Section: Discussionsupporting

confidence: 85%

Medidas eletroglotográficas em falantes do português brasileiro por meio do Método Multiparamétrico de Avaliação Vocal Objetiva Assistida (EVA)

Faria¹,

Oliveira²,

Silva³

et al. 2012

Braz. j. otorhinolaryngol.

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Objective: This paper aims to define the mean values for electroglottography tests of Brazilian Portuguese speakers on EVA. Materials and Method:The voices of 20 men and 20 women without voice-related complaints were analyzed through electroglottography so as to obtain reference values for normality. Case study: this is a descriptive cross-sectional study. Results:The mean values for normal male voices were: F0 = 127.77 Hz; F0 coefficient of variation = 2.51%; absolute jitter = 1.707 Hz; relative average perturbation = 0.0083; jitter factor = 1.34%; jitter ratio = 13.45%; QF = 0.447. The values for female voices were: F0 = 204.87 Hz; F0 coefficient of variation = 1.58%; absolute jitter = 3.30Hz; relative average perturbation = 0.0102; jitter factor = 1.60%; jitter ratio = 16.23%; QF = 0.443. Wave type for the entire sample was categorized as tilted pulse.Conclusion: Statistically significant differences were found for gender on parameters average F0 and absolute jitter. While using acoustic analysis software, users must be based on parameters inherent to the software program when analyzing the collected data. Braz J Otorhinolaryngol. 2012;78(4):29-34. BJORL ORIGINAL ARTICLE

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Section: Discussionsupporting

confidence: 85%

Medidas eletroglotográficas em falantes do português brasileiro por meio do Método Multiparamétrico de Avaliação Vocal Objetiva Assistida (EVA)

Faria¹,

Oliveira²,

Silva³

et al. 2012

Braz. j. otorhinolaryngol.

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“…23,46 Furthermore, misalignment of the head position, including an increase in lumbar lordosis with adaptive head elevation, determines an inflexible respiratory pattern which results in compression of the vocal tract. 26,47 Finally, and as previously shown, our results point to a higher mean TL for the dysphonic speakers group in comparison with the normal speakers group after controlling for sex differences. The same difference is observed in the mean of the KI.…”

Section: Discussionsupporting

confidence: 88%

“…In our study, subjects were classified as normal or dysphonic speakers according to the methodology described by Guimarães and Abberton. 26 Specifically, a subject with vocal disorders or dysphonia was one with (1) vocal complaints for more than 15 days, (2) evidence of structural lesion, and/or (3) alterations in laryngeal dynamics that were reflected perceptually and acoustically. If a speaker experienced two or more of the aforementioned conditions, he/she was classified as dysphonic.…”

Section: E2mentioning

confidence: 99%

“…Laryngeal inspection was made by the ear, nose, and throat surgeon after a nasoendoscopic examination. The reference values of perceptive measures (grade component of the GRBAS scale 27 ) and acoustic measures (fundamental frequency, jitter, intensity, shimmer, and harmonic-to-noise ratio) used to decide the diagnosis were in accordance with Hirano, 27 Guimarães and Abberton, 26 Behlau et al, 28 Mendes and Castro. 29 As reported in the literature, jitter, shimmer, and ''noise'' variables are the acoustic measures most commonly correlated to perceptual measures.…”

Section: E2mentioning

confidence: 99%

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Is the Sagittal Postural Alignment Different in Normal and Dysphonic Adult Speakers?

et al. 2014

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Summary: Objective. Clinical research in the field of voice disorders, in particular functional dysphonia, has suggested abnormal laryngeal posture due to muscle adaptive changes, although specific evidence regarding body posture has been lacking. The aim of our study was to verify if there were significant differences in sagittal spine alignment between normal (41 subjects) and dysphonic speakers (33 subjects). Study Design. Cross-sectional study. Methods. Seventy-four adults, 35 males and 39 females, were submitted to sagittal plane photographs so that spine alignment could be analyzed through the Digimizer-MedCalc Software Ltd program. Perceptual and acoustic evaluation and nasoendoscopy were used for dysphonic judgments: normal and dysphonic speakers. Results. For thoracic length curvature (TL) and for the kyphosis index (KI), a significant effect of dysphonia was observed with mean TL and KI significantly higher for the dysphonic speakers than for the normal speakers. Concerning the TL variable, a significant effect of sex was found, in which the mean of the TL was higher for males than females. The interaction between dysphonia and sex did not have a significant effect on TL and KI variables. For the lumbar length curvature variable, a significant main effect of sex was demonstrated; there was no significant main effect of dysphonia or significant sex 3 dysphonia interaction. Conclusions. Findings indicated significant differences in some sagittal spine posture measures between normal and dysphonic speakers. Postural measures can add useful information to voice assessment protocols and should be taken into account when considering particular treatment strategies.

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“…The vocal folds are a remarkably unique tissue in the body, in that they can produce vibration at rates between 100-1000 hertz throughout the course of a day (Guimaraes & Abberton, 2005;Hunter et al, 2006). When this robust tissue is disrupted by scarring associated with vocal fold lesion excision, carcinoma, radiation, trauma, or inflammatory disease, the associated degradation in vocal quality can be devastating.…”

Section: Introductionmentioning

confidence: 99%