Qualidade de vida em voz, avaliação perceptivoauditiva e análise acústica da voz de professoras com queixas vocais

Cielo, Carla Aparecida; Ribeiro, Vanessa Veis; Bastilha, Gabriele Rodrigues; Schilling, Nilvana de Oliveira

doi:10.1590/s2317-64312015000200001511

Cited by 16 publications

(11 citation statements)

References 21 publications

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“…The decrease in jitter may point out more regularity in vocal fold mucosa vibration, which match the decrease of noise in vocal quality 25,28,29 . The increase in harmonic-to-noise ratio corresponds to the amount of harmonic against the amount of noise in voice, which means the overall decrease of noise in voice, including amplitude variations and frequency, turbulence noise, sub-harmonic components, and voice breakdowns 28 , corroborates to the other findings of acoustic analysis.…”

Section: Discussionmentioning

confidence: 86%

“…Roughness is a noisy voice quality that indicates vocal folds vibration irregularity, regardless the noise vibration frequency because it contemplates both hoarseness and harshness 24,25 . Breathiness is the audible presence of air in voice 24 .…”

Section: Discussionmentioning

confidence: 99%

“…Literature quotes the association between the increase of sound pressure level and the fundamental frequency 26 . The decrease of loudness enable by the dynamic soundfield system use, that automatically adjusts the frequency and intensity of sound in order to reach all the students equally 14 , may have facilitated the teacher communication, decreasing the fundamental frequency, because the vocal effort may have decreased, and the fundamental frequency lower indicates the decrease of strain and muscle overload 7,24,25 . Thus, a study analyzing the perception of 12 teachers, mean time experience of 13 years in classroom, regarding the perceived changes between the teaching periods with and without the dynamic soundfield system use, showed 92% of teachers reporting the decrease of vocal strain the major benefit of the dynamic soundfield system 27 .…”

Section: Discussionmentioning

confidence: 99%

“…Still, the shimmer measure is the amplitude perturbation cycle-by-cycle, and it shows how the amplitude of a cycle if different from the next one 28 . The increase of shimmer may indicates worsening of vocal folds contact coefficient 25,28,29 , and may be connected to teacher's vocal and muscle fatigue.…”

Section: Discussionmentioning

confidence: 99%

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Impacto do sistema de campo livre dinâmico na voz do professor: estudo de caso

et al. 2016

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The theme of this study was to evaluate the effect of the dynamic soundfield system in one period of the day, the teacher's vocal symptoms and voice quality in the classroom. A case relate of a teacher of 44 years who served in the role for 23 years, and taught in the same room in the morning and afternoon. The teacher used the dynamic soundfield system during one of the periods of the day for about three months. Daily evaluation was carried out of the occurrence of symptoms in the vocal tract, and their intensity before and after school; perceptual and acoustic analysis of voice before and after the observation period, and applying a self-perception questionnaire about the use of dynamic open field system, the end of the observation period. The data were analyzed descriptive and by the Wilcoxon test (p=0.05). There was a decrease in the intensity of the symptom "dryness" to the end of class, and lower incidence of vocal symptoms with the use of dynamic soundfield system, as well as improvement in perceptual and acoustic parameters of the voice after a period of observation and reporting of positives by the teacher on the use of dynamic soundfield system. In the case study, the use of dynamic soundfield system, one of the periods of the day, was effective in reducing symptoms and improvement in perceptual voice quality and acoustics. Keywords: Amplifiers, Electronic; Signal-To-Noise Ration; Occupational Health; Educational Technology; Voice RESUMO Este estudo teve como tema avaliar o efeito do sistema de campo livre dinâmico, em um período do dia, nos sintomas vocais e na qualidade vocal de uma professora em sala de aula. Relato de caso clínico de uma professora de 44 anos, que atuava na função há 23 anos, e lecionava na mesma sala no perí-odo matutino e vespertino. A professora utilizou um sistema de amplificação em campo livre dinâmico durante um dos períodos do dia por aproximadamente três meses. Foi realizada avaliação diária da ocorrência dos sintomas no trato vocal, e da intensidade deles antes e após a aula; análise perceptivo-auditiva e acústica da voz antes e após o período de observação, e aplicação de um questionário de autopercepção sobre o uso do sistema de campo livre dinâmico, ao final do período de observação. Os dados foram analisados descritivamente e por meio do teste de Wilcoxon (p=0,05). Observou-se diminuição da intensidade do sintoma "secura" ao final da aula, e menor ocorrência de sintomas vocais com a utilização do sistema de campo livre dinâmico, além de melhora em parâmetros perceptivo-auditivos e acústicos da voz após o período de observação, e do relato de pontos positivos pela professora quanto ao uso de sistema de campo livre dinâmico. No caso estudado, o uso do sistema de campo livre dinâmico, em um dos períodos do dia, foi efetivo na diminuição dos sintomas e na melhora na qualidade vocal perceptivo--auditiva e acústica.

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Section: Discussionmentioning

confidence: 86%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

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Impacto do sistema de campo livre dinâmico na voz do professor: estudo de caso

et al. 2016

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“…Moreover, even with a basic pattern of normality that identifies the voice quality, it should be noted that the talks generally consists of an aspect which toggles through circumstances of human beings, i.e. still depends on physical or psychological conditions (CIELO et al, 2015).…”

Section: Vocal Quality Of the Hearing Impairedmentioning

confidence: 99%

Synthesizable and Prototypic Visual-Tactile System-in Fpga: An Alternative to Analysis and Improvement of the Voice Quality for the Hearing Impaired People

Alves

Soares²,

Freire

et al. 2016

HOLOS

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Oral communication comprises one of the most important forms of social interaction. The process of learning the spoken language depends on the hearing, therefore, the total or partial loss of hearing sensitivity hinders such aspect. Digital signal processing techniques with non-invasive character are used for diagnosis, support and improvement of the voice quality of the deaf. Thus, the present study aims to propose and develop a system of analysis and correction of vocal disorders by means of visual and tactile feedback with module implemented in programmable device type FPGA (Field Programmable Gate Array). The results point to the potential of a proposed intervention as a helper for sensory substitution, being based on the monitoring and control of speech, in order to allow for the assessment and remediation by means of an electronic resource, allowing deaf individuals to obtain a support for learning the spoken language. The possibilities for improvements in communication skills observed in this study are dependent on the capability of the device together with the speech therapist, integrating therapies with the support of the family, the time and the motivation of the user, factors that cooperate for the success of this approach. KEYWORDS:Deafness, Speech, FPGA, Assistive Technology and Visual-Tactile Stimulation. SISTEMA VÍSUO-TÁTIL SINTETIZÁVEL E PROTOTIPÁVEL EM FPGA: UMA ALTERNATIVA PARA ANÁLISE E MELHORIA DA QUALIDADE DA VOZ DE DEFICIENTES AUDITIVOSA comunicação oral compreende uma das mais importantes formas de interação social. O processo de aprendizado da linguagem falada depende da audição, logo, a perda total ou parcial da sensibilidade auditiva dificulta tal aspecto. Técnicas de Processamento Digital de Sinais com caráter não-invasivo são usadas para diagnóstico, apoio e melhoria da qualidade da voz dos surdos. Desse modo, o presente estudo tem como objetivo propor e desenvolver um sistema de análise e correção de desordens vocais por meio da realimentação visual e tátil com módulo implementado em um dispositivo programável do tipo FPGA (Field Programmable Gate Array). Os resultados apontam para o potencial de uma proposta de intervenção como medida auxiliar para substituição sensorial, sendo baseada no monitoramento e controle da fala, de modo a permitir a avaliação e remediação por meio de um recurso eletrônico, possibilitando que os indivíduos surdos obtenham um suporte a mais para aprendizado da língua oral. As possibilidades de melhorias nas habilidades comunicativas observadas neste estudo dependem da potencialidade do dispositivo em conjunto com a atuação do fonoaudiólogo, a integração das terapias com o apoio da família, o tempo de utilização e a motivação do usuário, fatores estes que colaboram para o sucesso desta abordagem.

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