Acoustic Parameters
Mostrando 1-12 de 141 artigos, teses e dissertações.
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1. Glottal Closure inWomen with No Voice Complaints or Laryngeal Disorders
Abstract Introduction The understanding of normal vocal production is essential to guide any voice professional as it is fundamental to understand the effects of the posterior glottal gap on the vocal quality. Objective The aim of the present study was to verify the association between glottic closure, acoustic parameters, and some characteristics of the
Int. Arch. Otorhinolaryngol.. Publicado em: 25/11/2019
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2. Interference of dentofacial deformities in the acoustic characteristics of speech sounds
RESUMO Objetivo: verificar as características da fala quanto a produção dos sons fricativos em indivíduos com deformidades dentofaciais (DDF), por meio da análise acústica, analisando possíveis interferências da variação das bases ósseas na articulação da fala. Métodos: participaram 15 indivíduos adultos, ambos os sexos, com idade entre 17 a
Rev. CEFAC. Publicado em: 23/09/2019
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3. What is the Impact of Positive Airway Pressure in Nasal Polyposis? An Experimental Study
Abstract Introduction It has been hypothesized that increasing the interstitial hydrostatic pressure within the sinonasal mucosa of patients with nasal polyposis (NP) might decrease the size of nasal polyps. Objective To evaluate the effects of positive airway pressure, delivered by a continuous positive airway pressure (CPAP) device, in patients with NP
Int. Arch. Otorhinolaryngol.. Publicado em: 18/07/2019
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4. Análise acústica da voz: comparação entre dois tipos de microfones
RESUMO Objetivo Comparar os valores das medidas acústicas da voz, extraídas de gravações vocais realizadas com dois tipos de microfones. Métodos Participaram da pesquisa 103 pessoas do sexo feminino, com idades entre 18 e 54 anos. Foram coletadas amostras da vogal sustentada /e/, captadas por dois microfones, simultaneamente: Shure SM58 e Karsect HT-9
Audiol., Commun. Res.. Publicado em: 23/05/2019
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5. Investigating Hyperbolic Shear Deformation Theory on vibroacoustic behavior of the infinite Functionally Graded thick plate
Abstract This paper applies acoustic analysis of Sound Transmission Loss (STL) through infinite Functionally Graded (FG) thick plate employing Hyperbolic Shear Deformation Theory (HSDT). The procedure for applying a FG plate is followed by considering the material properties are changed continually based on power-law distribution of the materials in terms of
Lat. Am. j. solids struct.. Publicado em: 04/02/2019
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6. Vocal assessment of addicts on methadone therapy via the RBH scale and objective acoustic parameters
Resumo Introdução: Um grande número de pessoas em todo o mundo luta diariamente para livrar-se de seu vício em substâncias psicoativas ilegais. Com o objetivo de criar uma atmosfera de supervisão melhorada, comunicação estabelecida e melhora da qualidade de vida para drogaditos, foram criados centros que fornecem a substância substitutiva metadona.
Braz. j. otorhinolaryngol.. Publicado em: 2019-02
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7. Damage evaluation and failure mechanism analysis of steel tube confined reinforced-concrete columns by acoustic emission technology
Abstract As a new kind of composite structures and its advantages, the using of steel tube confined reinforced concrete (STCRC) columns have received increasing attention in civil engineering. Acoustic emission (AE) technique is applied to monitor the damage process of STCRC columns during an uniaxial compression test. The aim of this study is to investigate
Lat. Am. j. solids struct.. Publicado em: 29/11/2018
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8. Failure behavior monitoring and evaluation of steel-confined reinforced concrete columns by acoustic emission under quasi-static loading
Abstract The mechanical behavior and failure evolution of steel-confined and unconfined reinforced concrete (RC) columns are investigated under quasi-static loading through acoustic emission (AE) signal. The excellent hysteresis response, lighter damage characteristics and delayed catastrophe of steel-confined RC columns are verified. Characteristic AE param
Lat. Am. j. solids struct.. Publicado em: 01/11/2018
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9. Caracterización de daño por “b-value” de eventos de emisión acústica en ensayos de rotura de roca andesita
ABSTRACT Acoustic emission is a phenomenon that produces elastic waves when materials are subjected to tension. These waves spread towards the material surface where they are received by sensors that convert them into electrical signals for further analysis. In this work, acoustic emission signals were analysed in order to evaluate the amount of accumulated
Matéria (Rio J.). Publicado em: 19/07/2018
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10. Análisis de la forma de onda de señales de Emisión Acústica producida en ensayos de interfaces ceramo-metálicas
ABSTRACT The study of ceramic-metal interface is of special importance in odontology area by the current demand about dental prostheses, so it is very important to be more and more similar to natural teeth and with a long service life. With the aim of assessing in detail the behavior of ceramic-metal interface used in dental restorations systems, in this wor
Matéria (Rio J.). Publicado em: 19/07/2018
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11. Wave propagation in cellular locally resonant metamaterials
Abstract Locally resonant acoustic metamaterials have recently attracted a great interest due to their dynamic behaviour, characterized by a band gap at relatively low frequencies. This paper provides a numerical study, by means of finite element modal analyses, of the dynamic properties of 1D mass-in-mass and 2D cellular locally resonant metamaterials. The
Lat. Am. j. solids struct.. Publicado em: 04/06/2018
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12. Ultrasonic method of microvibration detection: part II - additional processing method and applications
Abstract Introduction In the last 28 years, the scientific community has been using elastography to evaluate the mechanical properties of biological tissue. The aim of this work was the optimization of the UDmV method, presented in Part I of the series, by means of modifying the technique employed to generate the reference sine and cosine functions, used fo
Res. Biomed. Eng.. Publicado em: 17/08/2017