Phonation Model
Mostrando 1-7 de 7 artigos, teses e dissertações.
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1. Bifurcação de Hopf generalizada para um sistema planar suave por partes
In this work we use the qualitative theory of the di?erential equations to quickly study the Hopf bifurcation for a smooth planar dynamical system under the variation of the control parameter of the system, and a generalized Hopf bifurcation emanated from a corner for piecewise smooth planar dynamical system, about the generation of a branch of periodic orbi
Publicado em: 2007
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2. Para um estudo da estruturação ritmica na fala disartrica / Towards a study of the rhythmic structural in dysarthric speech
Dysarthria is a speech disorder caused by neuromotors problems. These neuromotors problems may cause breath, phonation, resonance and speech articulation disturbance. The cause of these neuromotors problems can be the traumatic brain injury (TBI). TBI is a lesion that result of cerebral aggression, a collision in the head/or a fall happening cranial breaking
Publicado em: 2007
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3. VOCAL AND LARYNGEAL MODIFICATIONS PRODUCED BY THE VIBRANT LINGUAL SOUND / MODIFICAÇÕES LARÍNGEAS E VOCAIS PRODUZIDAS PELO SOM VIBRANTE LINGUAL
This research had like objective to investigate the vocal and laryngeal effect and sensations that appeared from to the execution of the voiced tongue vibration technique (VTVT) applied in three series of fifteen repetitions, in the maximum time of phonation with habitual tone and intensity, with pauses of thirty seconds of passive rest between each serie. F
Publicado em: 2006
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4. Avaliação vocal e atividade eletrica dos musculos supra-hioideos e esternocleidomastoideo em individuos com desordem temporomandibular miogenica em situações de repouso e fonação
The aim of this study was to evaluate the voice and mesure the electrical activity of suprahyoid (SH) and esternocleidomastoid (SCM) muscles in subjects with temporomandibular joint disorder, in rest and speaking situations. By means of surface eletromyographic, were assessed the SCM left and right muscles, as well as the SH muscles of 20 female individuais,
Publicado em: 2002
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5. Analysis of flow-structure interaction in the larynx during phonation using an immersed-boundary method
A recently developed immersed-boundary method is used to model the flow-structure interaction associated with the human phonation. The glottal airflow is modeled as a two-dimensional incompressible flow driven by a constant subglottal pressure, and the vocal folds are modeled as a pair of three-layered, two-dimensional, viscoelastic structures. Both the flui
Acoustical Society of America.
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6. A new mechanism of sound generation in songbirds
Our current understanding of the sound-generating mechanism in the songbird vocal organ, the syrinx, is based on indirect evidence and theoretical treatments. The classical avian model of sound production postulates that the medial tympaniform membranes (MTM) are the principal sound generators. We tested the role of the MTM in sound generation and studied th
The National Academy of Sciences of the USA.
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7. Pure-tone birdsong by resonance filtering of harmonic overtones
Pure-tone song is a common and widespread phenomenon in birds. The mechanistic origin of this type of phonation has been the subject of long-standing discussion. Currently, there are three hypotheses. (i) A vibrating valve in the avian vocal organ, the syrinx, generates a multifrequency harmonic source sound, which is filtered to a pure tone by a vocal
National Academy of Sciences.