Técnica de som nasal com arcadas fechadas e abertas: efeitos imediato nos parâmetros acústicos
Data
2023-11-16
Autores
Santos, Clara Miyashiro dos 
Orientadores
Odagima, Rosiane Kimiko Yamasaki
Tipo
Trabalho de conclusão de curso
Título da Revista
ISSN da Revista
Título de Volume
Resumo
Introdução: A técnica de som nasal é um exercício de trato vocal semiocluído
amplamente utilizado na terapia de voz por promover maior equilíbrio fonatório e
ressonantal. Os ajustes dos articuladores do trato vocal, como o posicionamento da
mandíbula, durante a execução da técnica de som nasal, podem interferir
diretamente no resultado vocal. Objetivo: Comparar o efeito imediato da técnica de
som nasal com arcadas fechadas e abertas em 1.0 cm e 1.5 cm em indivíduos
vocalmente saudáveis a partir dos parâmetros acústicos. Método: Participaram da
pesquisa 15 mulheres jovens vocalmente saudáveis, sem queixa vocal autorreferida,
de 18 a 40 anos. A gravação de voz das participantes foi realizada em 4 momentos:
1. Pré-técnica vocal (SN0); 2. Pós 3 min de técnica de som nasal com arcadas
fechadas (SN1); 3. Pós 3 min de técnica com arcadas abertas em 1.0 cm (SN2); e 4.
Pós 3 min de de técnica com arcadas abertas em 1.5 cm (SN3). Houve um intervalo
de 10 minutos entre as técnicas vocais. A ordem de execução da técnica foi
sorteada para cada participante. As gravações foram realizadas pelo programa
PRAAT. A tarefa de fala foi a vogal sustentada /a/. A amostra será analisada pela
análise acústica. Parâmetros acústicos: fo, jitter, shimmer, proporção GNE, HNR e
CPP. A extração das medidas acústicas foi realizada pelo PRAAT. Resultados:
Verificou-se diferença significante e com tamanho de efeito moderado entre o valor
médio do HNR pré-técnica vocal (SN0) e pós-técnica vocal com arcadas abertas em
1.0 cm (SN2) e em 1.5 cm (SN3), sendo maior em SN2 e SN3. Para os demais
parâmetros, não foi observada significância estatística. Apesar disso, verificou-se
tamanho de efeito moderado para GNE, média fo e Jitter. Além de efeito pequeno
para Shimmer e CPP. Conclusão: A técnica de som nasal com arcadas abertas em
1.0 (SN2) e em 1.5 cm (SN3) produziu aumento significativo da medida de HNR em
comparação à emissão SN0. GNE foi maior na condição SN1 do que SN2 e SN3,
com tamanho de efeito moderado, mas sem diferença estatística. Entretanto, a
presença de tamanho de efeito relevante oferece indícios de que num tamanho de
amostra maior, a diferença possa ser evidenciada.
Introduction: The nasal sound technique is a semi-occluded vocal tract exercise widely used in voice therapy because it promotes greater phonation and resonant balance. The adjustments made to the vocal tract articulators, such as the positioning of the mandible, during the execution of the nasal sound technique can directly interfere with the vocal result. Aim: To compare the immediate effect of the nasal sound technique with closed and open arches at 1.0 cm and 1.5 cm in vocally healthy individuals based on acoustic parameters. Method: 15 young women, with no self-reported vocal complaints, aged between 18 and 40 years, took part in the study. The participants' voices were recorded at 4 different times: 1. Pre-vocal technique (SN0); 2. After 3 min of nasal sound technique with closed arches (SN1); 3. After 3 min of technique with arches open by 1.0 cm (SN2); and 4. After 3 min of technique with arches open by 1.5 cm (SN3). There was a 10-minute interval between vocal techniques. The order in which the technique was performed was randomly selected for each participant. The recordings were made using the PRAAT program. The speech task was the sustained vowel /a/. The sample will be analyzed by acoustic analysis. Acoustic parameters: fo, jitter, shimmer, GNE ratio, HNR and CPP. The acoustic measurements were extracted using PRAAT. Results: There was a significant difference with a moderate effect size between the mean HNR value pre-vocal technique (SN0) and post-vocal technique with open arches at 1.0 cm (SN2) and at 1.5 cm (SN3), being higher in SN2 and SN3. No statistical significance was observed for the other parameters. Despite this, there was a moderate effect size for GNE, mean fo and Jitter. There was also a small effect size for Shimmer and CPP. Conclusion: The nasal sound technique with open arches at 1.0 (SN2) and 1.5 cm (SN3) produced a significant increase in the HNR measure compared to the SN0 emission. GNE was greater in the SN1 condition than SN2 and SN3, with a moderate effect size, but no statistical difference. However, the presence of a significant effect size suggests that with a larger sample size, the difference may be evident.
Introduction: The nasal sound technique is a semi-occluded vocal tract exercise widely used in voice therapy because it promotes greater phonation and resonant balance. The adjustments made to the vocal tract articulators, such as the positioning of the mandible, during the execution of the nasal sound technique can directly interfere with the vocal result. Aim: To compare the immediate effect of the nasal sound technique with closed and open arches at 1.0 cm and 1.5 cm in vocally healthy individuals based on acoustic parameters. Method: 15 young women, with no self-reported vocal complaints, aged between 18 and 40 years, took part in the study. The participants' voices were recorded at 4 different times: 1. Pre-vocal technique (SN0); 2. After 3 min of nasal sound technique with closed arches (SN1); 3. After 3 min of technique with arches open by 1.0 cm (SN2); and 4. After 3 min of technique with arches open by 1.5 cm (SN3). There was a 10-minute interval between vocal techniques. The order in which the technique was performed was randomly selected for each participant. The recordings were made using the PRAAT program. The speech task was the sustained vowel /a/. The sample will be analyzed by acoustic analysis. Acoustic parameters: fo, jitter, shimmer, GNE ratio, HNR and CPP. The acoustic measurements were extracted using PRAAT. Results: There was a significant difference with a moderate effect size between the mean HNR value pre-vocal technique (SN0) and post-vocal technique with open arches at 1.0 cm (SN2) and at 1.5 cm (SN3), being higher in SN2 and SN3. No statistical significance was observed for the other parameters. Despite this, there was a moderate effect size for GNE, mean fo and Jitter. There was also a small effect size for Shimmer and CPP. Conclusion: The nasal sound technique with open arches at 1.0 (SN2) and 1.5 cm (SN3) produced a significant increase in the HNR measure compared to the SN0 emission. GNE was greater in the SN1 condition than SN2 and SN3, with a moderate effect size, but no statistical difference. However, the presence of a significant effect size suggests that with a larger sample size, the difference may be evident.
Descrição
Citação
SANTOS, Clara Miyashiro dos. Técnica de som nasal com arcadas fechadas e abertas: efeitos imediato nos parâmetros acústicos. 2023. 37 f. Trabalho de Conclusão de Curso (Graduação em Fonoaudiologia) - Escola Paulista de Medicina, Universidade Federal de São Paulo (UNIFESP). São Paulo). São Paulo, 2023.