Three-dimensional Vocal Tract Morphology Based on Multiple Magnetic Resonance Images Is Highly Reproducible During Sustained Phonation

Mainka, Alexander; Platzek, Ivan; Mattheus, Willy; Fleischer, Mario; Müller, Ann-Sophie; Mürbe, Dirk

doi:10.1016/j.jvoice.2016.11.009

Cited by 23 publications

(34 citation statements)

References 17 publications

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“…The results of the performed measurements are useful for precise description of the process of mechanical vibration excitation and the acoustic noise radiation in the scanning area and vicinity of the MRI device. The measurement results and comparisons taken from a similar low field MRI tomograph can be useful for optimization of acoustic noise suppression in parallel with speech recording applied to 3-D modeling of the human vocal tract [3].…”

Section: Discussionmentioning

confidence: 99%

“…A radio frequency (RF) receiving/transmitting coil with a tested object/subject is placed between them. A rapidly changing current flowing through the gradient coils produces significant mechanical vibration, thus causing image blurring of thin layer samples and an acoustic noise that significantly degrades the simultaneously recorded speech signal during MR scanning of the human vocal tract [3]. The acoustic noise has always had negative physiological and psychical effects on the exposed person, depending on the noise intensity and time duration of noise exposure.…”

Section: Introductionmentioning

confidence: 99%

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Analysis of Energy Relations between Noise and Vibration Signals in the Scanning Area of an Open-Air MRI Device

Přibil

Přibilová

Frollo

2018

5th International Electronic Conference on Sensors and Applications

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The paper analyzes the influence of different magnetic resonance (MR) scan sequence parameters (echo time, repetition time, orientation of scan slices, sequence type, mass of a tested object) on the energy of the produced noise and vibration. The measured sound pressure levels, together with the recorded noise and vibration signals, were stored in a database and then processed using similar methods to speech signal analysis because the main frequencies of the acoustic noise and vibration lie in the standard audio frequency range. In the signal processing phase, four types of parameters describing the signal energy were determined and statistically analyzed, and the obtained results were visually and numerically compared.

show abstract

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of Energy Relations between Noise and Vibration Signals in the Scanning Area of an Open-Air MRI Device

Přibil

Přibilová

Frollo

2018

5th International Electronic Conference on Sensors and Applications

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“…16 It may be said that the relation between the first two formant positions and the nature of a vowel is well established in literature. [19][20][21][22][23] Specifically, it will be observed that a relation exists between the vowel space and the two main articulation gestures, which are the jaw and tongue positions. [24][25][26] The jaw position determines the first two formant positions (F 1 ), in the sense that low (open) vowels articulated with a low jaw tend to show a high F 1 and a low F 2 , and vice versa (see Fig.…”

Section: Neuromechanic Articulation Modelmentioning

confidence: 99%

“…The estimation of the corresponding scale weights c 21 and c 22 has to be carried on a time window W of adequate size to fulfill the conditions for pseudostationarity (time-invariance) requested by H3, as explained above. 32 One possibility is to rely on second order moments on W as…”

Section: Neuromechanic Articulation Modelmentioning

confidence: 99%

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Neuromechanical Modelling of Articulatory Movements from Surface Electromyography and Speech Formants

Gómez-Vilda

Gómez-Rodellar

Vicente

et al. 2019

Int. J. Neur. Syst.

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Speech articulation is produced by the movements of muscles in the larynx, pharynx, mouth and face. Therefore speech shows acoustic features as formants which are directly related with neuromotor actions of these muscles. The first two formants are strongly related with jaw and tongue muscular activity. Speech can be used as a simple and ubiquitous signal, easy to record and process, either locally or on e-Health platforms. This fact may open a wide set of applications in the study of functional grading and monitoring neurodegenerative diseases. A relevant question, in this sense, is how far speech correlates and neuromotor actions are related. This preliminary study is intended to find answers to this question by using surface electromyographic recordings on the masseter and the acoustic kinematics related with the first formant. It is shown in the study that relevant correlations can be found among the surface electromyographic activity (dynamic muscle behavior) and the positions and first derivatives of the first formant (kinematic variables related to vertical velocity and acceleration of the joint jaw and tongue biomechanical system). As an application example, it is shown that the probability density function associated to these kinematic variables is more sensitive than classical features as Vowel Space Area † †

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Morphofunctional evaluation of buccopharyngeal space using three-dimensional cone-beam computed tomography (3D-CBCT)

Hînganu

Cozma

et al. 2018

Annals of Anatomy - Anatomischer Anzeiger

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Three-dimensional Vocal Tract Morphology Based on Multiple Magnetic Resonance Images Is Highly Reproducible During Sustained Phonation

Cited by 23 publications

References 17 publications

Analysis of Energy Relations between Noise and Vibration Signals in the Scanning Area of an Open-Air MRI Device

Analysis of Energy Relations between Noise and Vibration Signals in the Scanning Area of an Open-Air MRI Device

Neuromechanical Modelling of Articulatory Movements from Surface Electromyography and Speech Formants

Morphofunctional evaluation of buccopharyngeal space using three-dimensional cone-beam computed tomography (3D-CBCT)

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