Novel Stimuli for Obtaining Nasalance Measures from Young Children

Watterson, Thomas; Hinton, Julie; McFarlane, Stephen C.

doi:10.1597/1545-1569(1996)033<0067:nsfonm>2.3.co;2

Cited by 35 publications

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“…One study with graduate students with experience in rating resonance disorders found good correlation between perceptual ratings and nasalance scores (Watterson et al 1996), the other study showed only moderate correlation (Watterson et al 1993). In both studies a practice session was included before the rating of the actual study's voices.…”

Section: Discussionmentioning

confidence: 99%

Comparison between perceptual assessments of nasality and nasalance scores

Brunnegård

Lohmander

Doorn

2012

Intl J Lang & Comm Disor

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The Nasometer might be useful for the SLP with limited experience in assessing resonance disorders in differentiating between hyper- and hyponasality. With listener reliability for ratings of hypernasality still being an issue, the use of a nasalance score as a complement to the perceptual evaluation will also aid the expert SLP. It will give an alternative way of quantifying speech resonance and might help in especially hard to judge cases.

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Section: Discussionmentioning

confidence: 99%

Comparison between perceptual assessments of nasality and nasalance scores

Brunnegård

Lohmander

Doorn

2012

Intl J Lang & Comm Disor

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“…Nasalance is an acoustic measure that has gained widespread acceptance as a diagnostic correlate of perceived oral-nasal resonance balance (e.g., Dalston et al, 1991;Hardin et al, 1992;Watterson et al, 1996). The term nasalance was coined by Fletcher (1978) to represent the output of a dual-microphone device called TONAR II.…”

Section: Abstract: Nasalance Transpalatal Nasalance Velopharyngealmentioning

confidence: 99%

Estimation of Transpalatal Nasalance during Production of Voiced Stop Consonants by Noncleft Speakers Using an Oral-Nasal Mask

Bundy

Zajac

2006

The Cleft Palate-Craniofacial Journal

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Objective: Our objective was to estimate nasalance due to transpalatal transfer of acoustic energy during production of voiced stop consonants by noncleft speakers. We also determined the relationship between the transpalatal nasalance and fundamental frequency (F0) of the speakers.Method: Participants were 8 men and 10 women (mean age ‫؍‬ 21.9 years, SD ‫؍‬ 4.0) without cleft palate who produced voiced stop (/b d g/) and nasal (/m n /) consonants in syllables embedded in a carrier phrase. Participants also read the Zoo Passage. A divided OroNasal Nasality System mask was used to simultaneously obtain acoustic nasalance and airflow during production of the consonants. Both F0-derived and first formant (F1)-derived nasalance were computed.Results: F0-derived and F1-derived peak nasalance across all speakers ranged from a low of 20% to a high of 80% during production of stop consonants. An estimate of error from the combined sources of transoral transfer of energy (5%) and acoustic crossover between microphones (15%) was no greater than 20%. Analysis of variance revealed no significant effects of the sex of the speakers for either F0-derived or F1-derived nasalance of stops. There was a significant effect of the place of stop production for F0-derived nasalance (p Ͻ .05). Nonsignificant but positive correlations were found between the F0 of the speakers and F0-derived (r ‫؍‬ .25) and F1-derived (r ‫؍‬ .45) nasalance.Conclusions: Transpalatal transfer of oral acoustic energy accounts for most nasalance obtained during production of voiced stop consonants by noncleft speakers. F1-derived nasalance appears to better reflect transpalatal effects. Clinical implications are discussed. KEY WORDS: nasalance, transpalatal nasalance, velopharyngeal closure, voiced stop consonantsNasalance is an acoustic measure that has gained widespread acceptance as a diagnostic correlate of perceived oral-nasal resonance balance (e.g., Dalston et al., 1991;Hardin et al., 1992;Watterson et al., 1996). The term nasalance was coined by Fletcher (1978) to represent the output of a dual-microphone device called TONAR II. Nasalance was defined as the ratio of nasal to oral-plus-nasal acoustic energy in a specific frequency range of speech. This range approximated the energy region of the first formant (F1) of most vowels (350 to

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“…The technique estimates the velopharyngeal function indirectly, by measuring nasalance, a physical magnitude that corresponds to the relative amount of nasal acoustic energy during production of oral sounds (14) , according to the spoken language. Nasalance scores must be obtained from standardized speech samples, which are composed of exclusively oral or predominantly nasal consonants, in order to diagnose hypernasality or hyponasality, respectively (15,16,17) . Speech stimuli may be of high pressurecontaining plosive, fricative, and affricate consonants, or of low pressure -containing vowels and liquid consonants (18) .…”

Section: Introductionmentioning

confidence: 99%

Influência das consoantes de alta e baixa pressão intraoral sobre a nasalidade e nasalância da fala em pacientes com fissura de palato reparada

Ferlin

Yamashita

Fukushiro

2017

Audiol., Commun. Res.

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RESUMO Introdução Na fissura de palato, a realização de um diagnóstico preciso das alterações de fala auxilia o processo de reabilitação, direcionando o tratamento para a disfunção velofaríngea. Objetivo Determinar o estímulo de fala que melhor identifica a hipernasalidade, comparando a nasalidade da fala e a nasalância em estímulos de alta e baixa pressão intraoral, em indivíduos com fissura palatina. Métodos Quarenta e quatro indivíduos com fissura de palato±lábio operada, de ambos os sexos, com idades entre 6 e 59 anos, foram submetidos, simultaneamente, à nasometria e gravação de fala. A nasalância foi determinada utilizando amostras de fala com consoantes de alta pressão intraoral (AP) e consoantes de baixa pressão intraoral (BP). Três examinadores experientes classificaram a nasalidade nas duas amostras (AP e BP), de acordo com uma escala de 4 pontos (1=hipernasalidade ausente, 2=hipernasalidade leve, 3=hipernasalidade moderada, 4=hipernasalidade grave). Resultados Os escores médios ±desvio padrão de nasalância obtidos para as amostras AP e BP foram 31±15% e 31±12%, respectivamente, sem diferença (p=1,0). A concordância entre os examinadores foi maior para as amostras AP. A média de nasalidade entre as duas amostras apresentou diferença (p=0,05). As amostras AP apresentaram forte correlação entre os escores de nasalância e hipernasalidade e as amostras BP apresentaram correlação substancial. Conclusão A amostra composta por consoantes de alta pressão intraoral mostrou maior eficácia na identificação da hipernasalidade, pois proporcionou maior concordância entre os examinadores na análise perceptual da nasalidade, apresentou forte correlação entre os dois métodos utilizados e permitiu o diagnóstico de hipernasalidade em maior número de indivíduos.

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Novel Stimuli for Obtaining Nasalance Measures from Young Children

Cited by 35 publications

References 0 publications

Comparison between perceptual assessments of nasality and nasalance scores

Comparison between perceptual assessments of nasality and nasalance scores

Estimation of Transpalatal Nasalance during Production of Voiced Stop Consonants by Noncleft Speakers Using an Oral-Nasal Mask

Influência das consoantes de alta e baixa pressão intraoral sobre a nasalidade e nasalância da fala em pacientes com fissura de palato reparada

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