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1.
Codas ; 32(5): e2019022, 2020.
Artigo em Português, Inglês | MEDLINE | ID: mdl-33053081

RESUMO

PURPOSE: Analyze the measures of the fundamental frequency, electroglotographic jitter, contact quotient and periodicity of the electroglotographic waves of the singers in habitual voice. METHOD: A cross-sectional observational study, which selected individuals from singing schools in the central region of the municipality of Belo Horizonte. The sample was non-probabilistic, for convenience consisted of 60 singers aged between 18 and 55 years, 30 males and 30 females. For the electroglotographic record collection, the Kay Pentax ™ CSL program, model 6103, the Electroglotographic module was used. The participants were placed in a seated position, and after cleaning the skin of the neck with 70% alcohol, two electrodes were placed on the wings of the thyroid cartilage at the level of the vocal folds. Subsequently, the participants were instructed to emit the vowel/a/sustained in a habitual way. The measurements of the fundamental frequency (f0), contact quotient (QC), electroglotographic jitter and periodicity of the electroglotographic wave were analyzed. The data were statistically analyzed using Minitab 17. RESULTS: The parameters analyzed were statistically significant. The fundamental frequency (f0) was higher in females (226.91Hz) when compared to males (166.54Hz). The measure of contact quotient and periodicity was also higher in women (40.46% and 15.51% respectively) when compared to men (27.45% and 7.82, respectively). The jitter parameter was higher in men when compared to women. CONCLUSION: Women presented higher values in the fundamental frequency (f0), contact quotient (QC) and periodicity of the wave compared to men. The men presented the jitter value higher than that of the women.


Assuntos
Canto , Voz , Adolescente , Adulto , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Acústica da Fala , Qualidade da Voz , Adulto Jovem
2.
CoDAS ; 32(5): e2019022, 2020. tab, graf
Artigo em Português | LILACS-Express | LILACS | ID: biblio-1133522

RESUMO

RESUMO Objetivo: Analisar as medidas de frequência fundamental, jitter eletroglotográfico, quociente de contato e periodicidade das ondas eletroglotográficas da voz de cantores em registro modal. Método: Estudo observacional de corte transversal que selecionou indivíduos de escolas de canto da região central do município de Belo Horizonte-MG. A amostra foi não probabilística, por conveniência, composta por 60 indivíduos cantores com faixa etária entre 18 e 55 anos, sendo 30 homens e 30 mulheres. Para a coleta do registro eletroglotográfico, foi utilizado o programa CSL da Kay Pentax™, model 6103, módulo Electroglottography. Os participantes foram posicionados sentados e, após a higienização da pele do pescoço com álcool 70 %, dois eletrodos foram colocados nas alas da cartilagem tireóidea no nível das pregas vocais. Posteriormente, os participantes foram orientados a emitir a vogal /a/ sustentada de forma habitual. Foram analisadas as medidas de frequência fundamental (f0), quociente de contato (QC), jitter eletroglotográfico e periodicidade da onda eletroglotográfica. Os dados foram analisados estatisticamente utilizando o Minitab 17. Resultados: Os parâmetros analisados foram estatisticamente significantes. A frequência fundamental (f0) foi maior nas mulheres (226,91 Hz) quando comparada com a dos homens (166,54 Hz). As medidas de quociente de contato e de periodicidade também foram maiores nas mulheres (40,46 % e 15,51 %, respectivamente) se comparadas às dos homens (27,45 % e 7,82, respectivamente). O parâmetro de jitter foi maior nos homens, quando comparado ao das mulheres. Conclusão: Os valores de frequência fundamental (f0), quociente de contato (QC) e periodicidade da onda foram maiores nas mulheres. O valor de jitter foi maior nos homens.


ABSTRACT Purpose: Analyze the measures of the fundamental frequency, electroglotographic jitter, contact quotient and periodicity of the electroglotographic waves of the singers in habitual voice. Method: A cross-sectional observational study, which selected individuals from singing schools in the central region of the municipality of Belo Horizonte. The sample was non-probabilistic, for convenience consisted of 60 singers aged between 18 and 55 years, 30 males and 30 females. For the electroglotographic record collection, the Kay Pentax ™ CSL program, model 6103, the Electroglotographic module was used. The participants were placed in a seated position, and after cleaning the skin of the neck with 70% alcohol, two electrodes were placed on the wings of the thyroid cartilage at the level of the vocal folds. Subsequently, the participants were instructed to emit the vowel/a/sustained in a habitual way. The measurements of the fundamental frequency (f0), contact quotient (QC), electroglotographic jitter and periodicity of the electroglotographic wave were analyzed. The data were statistically analyzed using Minitab 17. Results: The parameters analyzed were statistically significant. The fundamental frequency (f0) was higher in females (226.91Hz) when compared to males (166.54Hz). The measure of contact quotient and periodicity was also higher in women (40.46% and 15.51% respectively) when compared to men (27.45% and 7.82, respectively). The jitter parameter was higher in men when compared to women. Conclusion: Women presented higher values in the fundamental frequency (f0), contact quotient (QC) and periodicity of the wave compared to men. The men presented the jitter value higher than that of the women.

3.
Codas ; 30(5): e20170240, 2018 Oct 08.
Artigo em Português, Inglês | MEDLINE | ID: mdl-30304128

RESUMO

PURPOSE: Compare acoustic and aerodynamic voice measures between male and female singers. METHODS: A cross-sectional, observational, comparative study conducted with a convenience sample. Study participants were 30 male and 30 female singers. Acoustic (vocal intensity and fundamental frequency) and aerodynamic (expiration time, air pressure, expiratory and voice airflow, expiratory volume, aerodynamic power and resistance, acoustic impedance, and aerodynamic efficiency) measures were assessed during emission of the syllable /pá/, at usual frequency and intensity, for seven consecutive times. These emissions enable extraction of air pressure measures (obtained by the plosive consonant /p/, which estimates glottic pressure), as well as of airflow and acoustic voice measures (obtained by the vowel /a/ and the syllable /pá/). RESULTS: Women presented higher values of fundamental frequency compared with those of men. No differences were identified in the evaluation of aerodynamic measures between the groups. CONCLUSION: Values of aerodynamic measures do not differ between male and female singers.


Assuntos
Canto/fisiologia , Acústica da Fala , Qualidade da Voz/fisiologia , Acústica , Adolescente , Adulto , Brasil , Estudos Transversais , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Pressão , Ventilação Pulmonar , Fatores Sexuais , Treinamento da Voz , Adulto Jovem
4.
CoDAS ; 30(5): e20170240, 2018. tab, graf
Artigo em Português | LILACS-Express | LILACS | ID: biblio-952873

RESUMO

RESUMO Objetivo Comparar medidas acústicas e aerodinâmicas da voz em homens e mulheres cantores. Método Trata-se de um estudo transversal, observacional, comparativo, com amostra de conveniência. Participaram do estudo 30 homens e 30 mulheres cantores. Foi realizada avaliação das medidas acústicas (intensidade e frequência fundamental) e aerodinâmicas (tempo de expiração, pressão aérea, fluxo de ar expirado e vozeado, volume expiratório, potência e resistência aerodinâmica, impedância acústica e eficiência aerodinâmica) durante a emissão da sílaba /pá/ em frequência e intensidade habituais, sete vezes consecutivas. Estas emissões permitem a extração de medidas de pressão aérea (obtidas da consoante plosiva /p/ que estima a pressão glótica) e das medidas de fluxo aéreo e acústicas da voz (obtidas da vogal /a/ da sílaba /pá/). Resultados Na comparação de homens e mulheres cantores, as mulheres apresentam maiores valores de frequência fundamental, e não houve diferenças na avaliação de valores das medidas aerodinâmicas entre os gêneros. Conclusão Os valores das medidas aerodinâmicas não se diferenciam entre mulheres e homens cantores.


ABSTRACT Purpose Compare acoustic and aerodynamic voice measures between male and female singers. Methods A cross-sectional, observational, comparative study conducted with a convenience sample. Study participants were 30 male and 30 female singers. Acoustic (vocal intensity and fundamental frequency) and aerodynamic (expiration time, air pressure, expiratory and voice airflow, expiratory volume, aerodynamic power and resistance, acoustic impedance, and aerodynamic efficiency) measures were assessed during emission of the syllable /pá/, at usual frequency and intensity, for seven consecutive times. These emissions enable extraction of air pressure measures (obtained by the plosive consonant /p/, which estimates glottic pressure), as well as of airflow and acoustic voice measures (obtained by the vowel /a/ and the syllable /pá/). Results Women presented higher values of fundamental frequency compared with those of men. No differences were identified in the evaluation of aerodynamic measures between the groups. Conclusion Values of aerodynamic measures do not differ between male and female singers.

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