Reliable acoustic measurements in children between 5;0 and 9;11 years: Gender, age, height and weight effects on fundamental frequency, jitter and shimmer in phonations without and with controlled voice SPL

Brockmann-Bauser, Meike; Beyer, Denis; Bohlender, Jürgen

doi:10.1016/j.ijporl.2015.09.005

Cited by 21 publications

(13 citation statements)

References 40 publications

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“…HNR can be computed in the time and spectral domains and indicates a ratio of harmonic energy to noise energy in the acoustic speech signal 5 . Despite a wide application to characterize voices with pathologies and to evaluate intervention success, the reliability and validity of acoustic perturbation measures are limited to date 4,6,7 . This has led to an uneven application of acoustic perturbation measures in clinical studies.…”

Section: Introductionmentioning

confidence: 99%

“…In clinical measurements, usually patients are asked to produce sustained phonation of the vowel /a/, /i/ or /u/ with "comfortable pitch and loudness" 4,7,22 . Under these measurement conditions, vowel effects have been documented in a number of works in individuals with and without voice disorders.…”

Section: Introductionmentioning

confidence: 99%

“…Under these measurement conditions, vowel effects have been documented in a number of works in individuals with and without voice disorders. For this reason, the current recommendation is to use the standard vowel /a/ in clinical practice 7,[22][23][24][25] .…”

Section: Introductionmentioning

confidence: 99%

“…To date, it is not clear if these effects also apply to other indices of vocal perturbation or irregularity such as HNR. Also, this relation has been only investigated in vocally healthy adults and children 4,7,22,23,35 . Therefore, the main aims of the present work were to study SPL-related effects on jitter, shimmer, and HNR in individuals with and without diagnosed voice disorders, while also considering the influence of age and occupation-related voice use level.…”

Section: Introductionmentioning

confidence: 99%

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Acoustic Perturbation Measures Improve with Increasing Vocal Intensity in Individuals With and Without Voice Disorders

2018

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OBJECTIVE: In vocally healthy children and adults, speaking voice loudness differences can significantly confound acoustic perturbation measurements. This study examines the effects of voice sound pressure level (SPL) on jitter, shimmer, and harmonics-to-noise ratio (HNR) in adults with voice disorders and a control group with normal vocal status. STUDY DESIGN: This is a matched case-control study. METHODS: We assessed 58 adult female voice patients matched according to approximate age and occupation with 58 vocally healthy women. Diagnoses included vocal fold nodules (n = 39, 67.2%), polyps (n = 5, 8.6%), and muscle tension dysphonia (n = 14, 24.1%). All participants sustained the vowel /a/ at soft, comfortable, and loud phonation levels. Acoustic voice SPL, jitter, shimmer, and HNR were computed using Praat. The effects of loudness condition, voice SPL, pathology, differential diagnosis, age, and professional voice use level on acoustic perturbation measures were assessed using linear mixed models and Wilcoxon signed rank tests. RESULTS: In both patient and normative control groups, increasing voice SPL correlated significantly (P < 0.001) with decreased jitter and shimmer, and increased HNR. Voice pathology and differential diagnosis were not linked to systematically higher jitter and shimmer. HNR levels, however, were statistically higher in the patient group than in the control group at comfortable phonation levels. Professional voice use level had a significant effect (P < 0.05) on jitter, shimmer, and HNR. CONCLUSIONS: The clinical value of acoustic jitter, shimmer, and HNR may be limited if speaking voice SPL and professional voice use level effects are not controlled for. Future studies are warranted to investigate whether perturbation measures are useful clinical outcome metrics when controlling for these effects. Study Design: Matched case-control study Methods: 58 adult female voice patients, matched according to approximate age and occupation with 58 vocally healthy women, were assessed. Diagnoses included vocal fold nodules (n:39, 67.2%), polyps (n:5, 8.6%), and muscle tension dysphonia (MTD; n:14, 24.1%). All participants sustained the vowel /a/ at soft, comfortable, and loud phonation levels. Acoustic voice SPL, jitter, shimmer, and HNR were computed using Praat. The effects of loudness condition, voice SPL, pathology, differential diagnosis, age, and professional voice use level on acoustic perturbation measures were assessed using linear mixed models and Wilcoxon signed-rank tests.Results: In both patient and normative control groups, increasing voice SPL correlated significantly (p<0.001) with decreased jitter and shimmer, and increased HNR. Voice pathology and differential diagnosis were not linked to systematically higher jitter and shimmer. HNR levels, however, were statistically higher in the patient versus control group at comfortable phonation levels. Professional voice use level had a significant effect (p<0.05) on jitter, shimmer, and HNR.Conclusions: The clinical value of ac...

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Acoustic Perturbation Measures Improve with Increasing Vocal Intensity in Individuals With and Without Voice Disorders

2018

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“…Quando comparadas com a emissão controlada, as Lorena de Almeida Ramos, Bárbara Oliveira Souza, Ana Cristina Côrtes Gama apresenta-se mais aguda por sofrer influência dos aspectos prosódicos 11 . As medidas acústicas de aperiodicidade de frequência e intensidade a curto prazo em crianças normofônicas foram também analisadas em três estudos 8,9,16 , por meio do programa Multi Dimensional Voice Program (MDVP) da Kay Pentax®, e apresentadas por faixa etária na Tabela 2. medidas acústicas de jitter e shimmer em crianças vocalmente saudáveis foram significativamente maiores na emissão habitual 14,15 . Os resultados da literatura evidenciam que as modificações anatô-micas sofridas na laringe durante o crescimento infantil modificam a f0, principalmente a partir dos seis anos de idade 16 .…”

Section: Qualidade Vocalunclassified

Análise vocal na infância: uma revisão integrativa

2017

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Resumo Objetivo: realizar uma revisão integrativa de literatura sobre as características de vozes normais e disfônicas e a prevalência de lesões nas pregas vocais em crianças. Voz", "Disfonia", "Rouquidão", "Qualidade da Voz", "Acústica da Fala", "Voz", "Fonação", "Pregas Vocais", "Pediatria", "Criança", "Pré-EscolarContribuição dos autores: LAR foi responsável pela busca bibliográfica, desenvolvimento do texto, elaboração do projeto e do manuscrito; BOS foi responsável pela busca bibliográfica e desenvolvimento do texto; ACCG foi responsável pela orientação geral das etapas de execução e elaboração do projeto e do manuscrito.

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