SLHlab

"The glottal flow is often simplified as one-dimensional (1D) in phonation models to reduce computational cost. Although previous studies showed that a 1D flow model can predict voice production by a three-dimensional (3D) flow combined with a simplified two-mass vocal fold model, its validity in voice production involving more realistic 3D vibrations remains unclear. The goal of this study is to investigate the accuracy of the 1D flow model in predicting vocal fold vibration and voice production in a vocal fold model exhibiting a more realistic 3D vibration pattern, by comparing its prediction to that from a mechanical experiment and a 3D Navier-Stokes compressible flow model. The results showed that the 1D flow model predicted overall vibratory pattern similar to that observed in experiment and simulations based on the 3D flow model. However, the 1D flow model predicted slightly larger displacements and greater glottal flow fluctuations than the 3D flow model. The 3D flow model revealed strong variations in surface pressure along the anterior-posterior direction, particularly during the closing phase, which was not captured by the 1D flow model. Despite these differences, the 1D flow model adequately reproduced major aerodynamic and vibratory features under typical normal phonatory conditions, supporting its use in phonation models for efficient voice simulations."

The abstract from "Evaluating the accuracy of one-dimensional glottal flow model in predicting voice production: comparison to experiments and three-dimensional flow simulations" by Tsukasa Yoshinaga and Zhaoyan Zhang. First published in Phys Fluids, November 2005

REFLECTIONS

This month's Reflection looks back on a pivotal article that detailed a method for representing speech signals based on principles of linear predictive coding. Learn about its lasting impact: https://doi.org/10.1121/10.0044102

Today is the last day you can apply for a postdoctoral fellowship in speech synthesis and recognition technology. Do not miss this opportunity to work with a unique team of Portuguese and Galician researchers! Details at https://euraxess.ec.europa.eu/jobs/437849

Hoje é o último dia em que pode candidatar-se a uma bolsa de pós-doutoramento em síntese e reconhecimento de fala. Não perca esta oportunidade de trabalhar com uma equipa única de investigadores portugueses e galegos! Detalhes em https://euraxess.ec.europa.eu/jobs/437849

Last chance to apply for a postdoctoral fellowship in speech synthesis and recognition technology. Only 3 days to the deadline! Details at https://euraxess.ec.europa.eu/jobs/437849

Não perca esta oportunidade de candidatar-se a uma bolsa de pós-doutoramento em síntese e reconhecimento de fala. Apenas 3 dias até à data limite! Detalhes em https://euraxess.ec.europa.eu/jobs/437849

Kickoff meeting in Santiago de Compostela of a very large Spain/Portugal project QUANTUM_IBER_IA/ Lançamento em Santiago de Compostela de um grande projeto Espanha/Portugal QUANTUM_IBER_IA

Speech synthesis and recognition technology postdoctoral fellowship: have you applied? Only 1 week to go! Our recruitment base is quite wide: Computer Science, Electronics, Communication Technology, Linguistics, Health Sciences or related scientific areas. Not sure your profile fits our project or would like to discuss your own ideas for a postdoctoral project? Just drop us a message or send us an e-mail. We are open discuss other possibilities. Details at https://euraxess.ec.europa.eu/jobs/437849 Deadline for applications: 3rd of June 2026.

Bolsa de pós-doutoramento em síntese e reconhecimento de fala: candidatou-se? Só falta 1 semana! A nossa base de recrutamento é bastante ampla: Engenharia Informática, Engenharia Eletrotécnica, Ciências e Tecnologias da Comunicação, Linguística, Ciências da Saúde ou outros afins. Não tem a certeza se o seu perfil se enquadra no nosso projeto ou gostaria de discutir as suas próprias ideias para um projeto pós-doutoral? Basta enviar-nos uma mensagem ou um e-mail. Estamos abertos a discutir outras possibilidades. Detalhes em https://euraxess.ec.europa.eu/jobs/437849 Data limite para as candidaturas: 3 de junho de 2026.

Conventional endoscopic imaging of vocal fold (VF) vibration provides only a two-dimensional superior view, missing essential vertical dynamics such as VF thickness and vertical displacement. In this in vivo case study, dynamic 3D VF MRI was applied in a professionally trained singer, achieving sub-millimeter spatial and sub-millisecond temporal resolution. https://doi.org/10.1121/10.0043582

Albert-Ludwigs-Universität Freiburg
Ludwig-Maximilians-Universität München
University of Music and Performing Arts Vienna
UCLA