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Echternach M, Burk F, Kirsch J, Traser L, Birkholz P, Burdumy M, Richter B. Articulatory and acoustic differences between lyric and dramatic singing in Western classical music. J Acoust Soc Am 2024; 155:2659-2669. [PMID: 38634661 DOI: 10.1121/10.0025751] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/29/2023] [Accepted: 03/27/2024] [Indexed: 04/19/2024]
Abstract
Within the realm of voice classification, singers could be sub-categorized by the weight of their repertoire, the so-called "singer's Fach." However, the opposite pole terms "lyric" and "dramatic" singing are not yet well defined by their acoustic and articulatory characteristics. Nine professional singers of different singers' Fach were asked to sing a diatonic scale on the vowel /a/, first in what the singers considered as lyric and second in what they considered as dramatic. Image recording was performed using real time magnetic resonance imaging (MRI) with 25 frames/s, and the audio signal was recorded via an optical microphone system. Analysis was performed with regard to sound pressure level (SPL), vibrato amplitude, and frequency and resonance frequencies as well as articulatory settings of the vocal tract. The analysis revealed three primary differences between dramatic and lyric singing: Dramatic singing was associated with greater SPL and greater vibrato amplitude and frequency as well as lower resonance frequencies. The higher SPL is an indication of voice source changes, and the lower resonance frequencies are probably caused by the lower larynx position. However, all these strategies showed a considerable individual variability. The singers' Fach might contribute to perceptual differences even for the same singer with regard to the respective repertoire.
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Affiliation(s)
- Matthias Echternach
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Munich University Hospital (LMU), Marchioninistr. 15, 81377 Munich, Germany
| | - Fabian Burk
- Department of Otorhinolaryngology and Plastic Surgery, SRH Wald-Klinikum Gera, Str. des Friedens 122, 07548 Gera, Germany
| | - Jonas Kirsch
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Munich University Hospital (LMU), Marchioninistr. 15, 81377 Munich, Germany
| | - Louisa Traser
- Institute of Musicians' Medicine, Faculty of Medicine, Freiburg University and Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
| | - Peter Birkholz
- Institute of Acoustics and Speech Communication, Technische Universität Dresden, 01062 Dresden, Germany
| | - Michael Burdumy
- Institute of Musicians' Medicine, Faculty of Medicine, Freiburg University and Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
- Department of Medical Physics, Radiology, Faculty of Medicine, Freiburg University and Freiburg University Medical Center Breisacher Str. 60, 79106 Freiburg, Germany
| | - Bernhard Richter
- Institute of Musicians' Medicine, Faculty of Medicine, Freiburg University and Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
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Burk F, Traser L, Burdumy M, Richter B, Echternach M. Dynamic changes of vocal tract dimensions with sound pressure level during messa di vocea). J Acoust Soc Am 2023; 154:3595-3603. [PMID: 38038612 DOI: 10.1121/10.0022582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/12/2023] [Accepted: 11/14/2023] [Indexed: 12/02/2023]
Abstract
The messa di voce (MdV), which consists of a continuous crescendo and subsequent decrescendo on one pitch is one of the more difficult exercises of the technical repertoire of Western classical singing. With rising lung pressure, regulatory adjustments both on the level of the glottis and the vocal tract are required to keep the pitch stable. The dynamic changes of vocal tract dimensions with the bidirectional variation of sound pressure level (SPL) during MdV were analyzed by two-dimensional real-time magnetic resonance imaging (25 frames/s) and synchronous audio recordings in 12 professional singer subjects. Close associations in the respective articulatory kinetics were found between SPL and lip opening, jaw opening, pharynx width, uvula elevation, and vertical larynx position. However, changes in vocal tract dimensions during plateaus of SPL suggest that perceived loudness could have been varied beyond the dimension of SPL. Further multimodal investigation, including the analysis of sound spectra, is needed for a better understanding of the role of vocal tract resonances in the control of vocal loudness in human phonation.
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Affiliation(s)
- Fabian Burk
- Department of Otorhinolaryngology and Plastic Surgery, SRH Wald-Klinikum Gera, Gera, Germany
- Institute of Musicians' Medicine, University Medical Center Freiburg, Freiburg im Breisgau, Germany
| | - Louisa Traser
- Institute of Musicians' Medicine, University Medical Center Freiburg, Freiburg im Breisgau, Germany
| | - Michael Burdumy
- Department of Radiology, Medical Physics, University Medical Center Freiburg, Freiburg im Breisgau, Germany
| | - Bernhard Richter
- Institute of Musicians' Medicine, University Medical Center Freiburg, Freiburg im Breisgau, Germany
| | - Matthias Echternach
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Munich University Hospital (LMU), Munich, Germany
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Echternach M, Kirsch J, Burk F, Traser L, Richter B, Burdumy M, Köberlein M. Articulatory and Phonatory Precision When Singing Staccato at Different Speeds. J Voice 2023:S0892-1997(23)00252-7. [PMID: 37689581 DOI: 10.1016/j.jvoice.2023.08.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2023] [Revised: 08/08/2023] [Accepted: 08/08/2023] [Indexed: 09/11/2023]
Abstract
INTRODUCTION Vocal tract adjustments are important for resonatory modification of the voice and also with respect to interactions concerning the voice source production. It is not clear, however, how fast, separated notes (staccato) influence vocal tract adjustments. MATERIAL AND METHODS Twelve professional singers (four sopranos, three mezzo-sopranos, three tenors, and two baritones/basses) were recorded with dynamic real-time 2D-magnetic resonance imaging (MRI) with 25 fps singing a scale in legato and different staccato speeds (60, 120, 180, and 240 bps). From the MRI material, the lip opening, jaw opening, jaw protrusion, tongue position, pharynx width, and larynx position were measured. Furthermore, the fundamental frequency was analyzed from the simultaneously recorded audio signal after noise cancellation. RESULTS The data show only very small differences between the legato and the staccato tasks and no great variations for different staccato speeds. During the pauses in between the staccato notes, minimal vocal tract adjustments were only detectable for the slowest staccato task. CONCLUSION There are no great differences in the vocal tract shapes for legato singing in contrast to staccato phonation and no great differences for different staccato speeds.
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Affiliation(s)
- Matthias Echternach
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, LMU University Hospital, Marchioninistr. 15, 81377 Munich, Germany.
| | - Jonas Kirsch
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, LMU University Hospital, Marchioninistr. 15, 81377 Munich, Germany
| | - Fabian Burk
- Institute of Musicians' Medicine, Freiburg University Medical Center and Faculty of Medicine Freiburg University, Elsässer Str. 2m, 79110 Freiburg, Germany
| | - Louisa Traser
- Institute of Musicians' Medicine, Freiburg University Medical Center and Faculty of Medicine Freiburg University, Elsässer Str. 2m, 79110 Freiburg, Germany
| | - Bernhard Richter
- Institute of Musicians' Medicine, Freiburg University Medical Center and Faculty of Medicine Freiburg University, Elsässer Str. 2m, 79110 Freiburg, Germany
| | - Michael Burdumy
- Department of Medical Physics, Radiology, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
| | - Marie Köberlein
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, LMU University Hospital, Marchioninistr. 15, 81377 Munich, Germany
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Köberlein M, Birkholz P, Burdumy M, Richter B, Burk F, Traser L, Echternach M. Investigation of resonance strategies of high pitch singing sopranos using dynamic three-dimensional magnetic resonance imaging. J Acoust Soc Am 2021; 150:4191. [PMID: 34972262 DOI: 10.1121/10.0008903] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 11/10/2021] [Indexed: 06/14/2023]
Abstract
Resonance-strategies with respect to vocal registers, i.e., frequency-ranges of uniform, demarcated voice quality, for the highest part of the female voice are still not completely understood. The first and second vocal tract resonances usually determine vowels. If the fundamental frequency exceeds the vowel-shaping resonance frequencies of speech, vocal tract resonances are tuned to voice source partials. It has not yet been clarified if such tuning is applicable for the entire voice-range, particularly for the top pitches. We investigated professional sopranos who regularly sing pitches above C6 (1047 Hz). Dynamic three-dimensional (3D) magnetic resonance imaging was used to calculate resonances for pitches from C5 (523 Hz) to C7 (2093 Hz) with different vowel configurations ([a:], [i:], [u:]), and different contexts (scales or octave jumps). A spectral analysis and an acoustic analysis of 3D-printed vocal tract models were conducted. The results suggest that there is no exclusive register-defining resonance-strategy. The intersection of fundamental frequency and first vocal tract resonance was not found to necessarily indicate a register shift. The articulators and the vocal tract resonances were either kept without significant adjustments, or the fR1:fo-tuning, wherein the first vocal tract resonance enhances the fundamental frequency, was applied until F6 (1396 Hz). An fR2:fo-tuning was not observed.
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Affiliation(s)
- Marie Köberlein
- Medical Faculty of the Albert-Ludwigs-University Freiburg, Freiburg Institute for Musicians' Medicine, University Medical Center Freiburg, University of Music Freiburg, Elsässer Straße 2m, 79110, Freiburg, Germany
| | - Peter Birkholz
- Institute of Acoustics and Speech Communication, Technische Universität Dresden, Germany
| | - Michael Burdumy
- Department of Medical Physics, Radiology, Freiburg University Medical Center, Germany
| | - Bernhard Richter
- Medical Faculty of the Albert-Ludwigs-University Freiburg, Freiburg Institute for Musicians' Medicine, University Medical Center Freiburg, University of Music Freiburg, Elsässer Straße 2m, 79110, Freiburg, Germany
| | - Fabian Burk
- Department of Otorhinolaryngology, Head and Neck Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany
| | - Louisa Traser
- Medical Faculty of the Albert-Ludwigs-University Freiburg, Freiburg Institute for Musicians' Medicine, University Medical Center Freiburg, University of Music Freiburg, Elsässer Straße 2m, 79110, Freiburg, Germany
| | - Matthias Echternach
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, University Hospital, LMU Munich, Germany
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Havel M, Sundberg J, Traser L, Burdumy M, Echternach M. Effects of Nasalization on Vocal Tract Response Curve. J Voice 2021; 37:339-347. [PMID: 33773895 DOI: 10.1016/j.jvoice.2021.02.013] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 01/28/2021] [Accepted: 02/02/2021] [Indexed: 11/26/2022]
Abstract
BACKGROUND Earlier studies have shown that nasalization affects the radiated spectrum by modifying the vocal tract transfer function in a complex manner. METHODS Here we study this phenomenon by measuring sine-sweep response of 3-D models of the vowels /u, a, ᴂ, i/, derived from volumetric MR imaging, coupled by means of tubes of different lengths and diameters to a 3-D model of a nasal tract. RESULTS The coupling introduced a dip into the vocal tract transfer function. The dip frequency was close to the main resonance of the nasal tract, a result in agreement with the Fujimura & Lindqvist in vivo sweep tone measurements [Fujimura & Lindqvist, 1972]. With increasing size of the coupling tube the depth of the dip increased and the first formant peak either changed in frequency or was split by the dip. Only marginal effects were observed of the paranasal sinuses. For certain coupling tube sizes, the spectrum balance was changed, boosting the formant peaks in the 2 - 4 kHz range. CONCLUSION A velopharyngeal opening introduces a dip in the transfer function at the main resonance of the nasal tract. Its depth increases with the area of the opening and its frequency rises in some vowels.
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Affiliation(s)
- Miriam Havel
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Munich University Hospital (LMU), Munich, Germany.
| | - Johan Sundberg
- Dept. of Speech Music Hearing, School of Computer Science and Communication, KTH (Royal Institute of Technology) Stockholm, Sweden; Dept. of Linguistics, Stockholm University, Stockholm, Sweden; University College of Music Education Stockholm, Stockholm, Sweden
| | - Louisa Traser
- Institute of Musicians' Medicine, Medical Center - University of Freiburg, Germany
| | - Michael Burdumy
- Dept. of Radiology, Medical Physics, Medical Center - University of Freiburg, Germany
| | - Matthias Echternach
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Munich University Hospital (LMU), Munich, Germany
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Traser L, Burk F, Özen AC, Burdumy M, Bock M, Blaser D, Richter B, Echternach M. Respiratory kinematics and the regulation of subglottic pressure for phonation of pitch jumps - a dynamic MRI study. PLoS One 2020; 15:e0244539. [PMID: 33382744 PMCID: PMC7775092 DOI: 10.1371/journal.pone.0244539] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/09/2019] [Accepted: 12/11/2020] [Indexed: 11/18/2022] Open
Abstract
The respiratory system is a central part of voice production as it contributes to the generation of subglottic pressure, which has an impact on voice parameters including fundamental frequency and sound pressure level. Both parameters need to be adjusted precisely during complex phonation tasks such as singing. In particular, the underlying functions of the diaphragm and rib cage in relation to the phonation of pitch jumps are not yet understood in detail. This study aims to analyse respiratory movements during phonation of pitch jumps using dynamic MRI of the lungs. Dynamic images of the breathing apparatus of 7 professional singers were acquired in the supine position during phonation of upwards and downwards pitch jumps in a high, medium, and low range of the singer's tessitura. Distances between characteristic anatomical landmarks in the lung were measured from the series of images obtained. During sustained phonation, the diaphragm elevates, and the rib cage is lowered in a monotonic manner. During downward pitch jumps the diaphragm suddenly changed its movement direction and presented with a short inspiratory activation which was predominant in the posterior part and was associated with a shift of the cupola in an anterior direction. The magnitude of this inspiratory movement was greater for jumps that started at higher compared to lower fundamental frequency. In contrast, expiratory movement of the rib cage and anterior diaphragm were simultaneous and continued constantly during the jump. The data underline the theory of a regulation of subglottic pressure via a sudden diaphragm contraction during phonation of pitch jumps downwards, while the rib cage is not involved in short term adaptations. This strengthens the idea of a differentiated control of rib cage and diaphragm as different functional units during singing phonation.
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Affiliation(s)
- Louisa Traser
- Institute of Musicians’ Medicine, Medical Center–University of Freiburg, Freiburg, Germany
- Division of Phoniatrics, Department of Otorhinolaryngology, Head Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- * E-mail:
| | - Fabian Burk
- Department of Otorhinolaryngology, Head- and Neck Surgery, Christian-Albrechts-University, Kiel, Germany
| | - Ali Caglar Özen
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Radiology, Medical Physics, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
- German Consortium for Translational Cancer Research Partner Site Freiburg, German Cancer Research Center (DKFZ), Heidelberg, Germany
| | - Michael Burdumy
- Department of Radiology, Medical Physics, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Michael Bock
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
- Department of Radiology, Medical Physics, Medical Center–University of Freiburg, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Daniela Blaser
- Division of Phoniatrics, Department of Otorhinolaryngology, Head Neck Surgery, Inselspital, Bern University Hospital, University of Bern, Bern, Switzerland
| | - Bernhard Richter
- Institute of Musicians’ Medicine, Medical Center–University of Freiburg, Freiburg, Germany
- Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Matthias Echternach
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Munich University Hospital, Munich, Germany
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Bock M, Traser L, Caglar Özen A, Burdumy M, Richter B, Echternach M. Reply to Letter to the Editor: "Nomenclature for real-time magnetic resonance imaging". Magn Reson Med 2018; 81:1485. [PMID: 30450633 DOI: 10.1002/mrm.27599] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2018] [Accepted: 10/17/2018] [Indexed: 12/29/2022]
Affiliation(s)
- Michael Bock
- Dept. of Radiology, Medical Physics, Medical Center - University of Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Germany
| | - Louisa Traser
- Faculty of Medicine, University of Freiburg, Germany.,Institute of Musicians' Medicine, Medical Center - University of Freiburg, Germany.,Department of Otolaryngology, Medical Center - University of Freiburg, Germany
| | - Ali Caglar Özen
- Dept. of Radiology, Medical Physics, Medical Center - University of Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Germany
| | - Michael Burdumy
- Dept. of Radiology, Medical Physics, Medical Center - University of Freiburg, Germany.,Faculty of Medicine, University of Freiburg, Germany
| | - Bernhard Richter
- Faculty of Medicine, University of Freiburg, Germany.,Institute of Musicians' Medicine, Medical Center - University of Freiburg, Germany.,Department of Otolaryngology, Medical Center - University of Freiburg, Germany
| | - Matthias Echternach
- Faculty of Medicine, University of Freiburg, Germany.,Institute of Musicians' Medicine, Medical Center - University of Freiburg, Germany.,Department of Otolaryngology, Medical Center - University of Freiburg, Germany
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Echternach M, Burk F, Rose F, Herbst CT, Burdumy M, Döllinger M, Richter B. [Impact of functional mass lesions in professional female singers : Biomechanics of vocal fold oscillation in the register transition regions]. HNO 2017; 66:308-320. [PMID: 29247438 DOI: 10.1007/s00106-017-0447-4] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Abstract
BACKGROUND The influence of functional mass lesions on vocal fold oscillation patterns in vocally challenging tasks is not yet understood in detail. MATERIALS UND METHODS Glissandi on the vowel [a:] from 220 to 440 Hz and 440 to 880 Hz were analyzed in three groups of four professional female singers: without a mass lesion or dysphony (group A), with a functional mass lesion (swellings without a great impact on oscillation patterns during stroboscopy; group B), and with organic dysphony (group C). High-speed digital imaging (HSDI; 20,000 fps), and acoustic and electroglottographic (EGG) signals were used for analysis. Based on the EGG sample entropy, time windows for analysis of register transition phenomena were constructed. The voice signals (glottal area waveform, GAW; acoustic and EGG signals) were perceptually rated in terms of the noticeability of registration events. RESULTS The absolute sample entropy revealed maxima in fundamental frequency regions where register transitions typically occur. Groups A and B could be distinguished neither by perceptual rating nor based on sample entropy values. In comparison to the other two groups, the absolute sample entropy values of group C were greater in the lower glissando. However, the larger vocal fold oscillatory irregularities were observable for the upper glissando in this group. CONCLUSION Functional mass lesions do not influence biomechanics adversely in vocally challenging tasks such as register transitions. The use of sample entropy as a criterion for detection of register transitions is promising, but needs further validation.
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Affiliation(s)
- M Echternach
- Freiburger Institut für Musikermedizin, Medizinische Fakultät, Albert-Ludwigs-Universität und Universitätsklinikum Freiburg, Breisacher Str. 60, 79106, Freiburg i.Br., Deutschland.
| | - F Burk
- Freiburger Institut für Musikermedizin, Medizinische Fakultät, Albert-Ludwigs-Universität und Universitätsklinikum Freiburg, Breisacher Str. 60, 79106, Freiburg i.Br., Deutschland
| | - F Rose
- Freiburger Institut für Musikermedizin, Medizinische Fakultät, Albert-Ludwigs-Universität und Universitätsklinikum Freiburg, Breisacher Str. 60, 79106, Freiburg i.Br., Deutschland
| | - C T Herbst
- Department für Musikwissenschaft, Universität Mozarteum Salzburg, Salzburg, Österreich
| | - M Burdumy
- Medizin Physik, Medizinische Fakultät, Albert-Ludwigs-Universität und Universitätsklinikum Freiburg, Breisacher Str. 60a, 79106, Freiburg, Deutschland
| | - M Döllinger
- Abteilung für Phoniatrie und Pädaudiologie an der HNO Klinik Erlangen, Universitätsklinikum Erlangen, Bohlenplatz 21, 91054, Erlangen, Deutschland
| | - B Richter
- Freiburger Institut für Musikermedizin, Medizinische Fakultät, Albert-Ludwigs-Universität und Universitätsklinikum Freiburg, Breisacher Str. 60, 79106, Freiburg i.Br., Deutschland
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Traser L, Birkholz P, Flügge TV, Kamberger R, Burdumy M, Richter B, Korvink JG, Echternach M. Relevance of the Implementation of Teeth in Three-Dimensional Vocal Tract Models. J Speech Lang Hear Res 2017; 60:2379-2393. [PMID: 28898358 DOI: 10.1044/2017_jslhr-s-16-0395] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2016] [Accepted: 02/23/2017] [Indexed: 06/07/2023]
Abstract
PURPOSE Recently, efforts have been made to investigate the vocal tract using magnetic resonance imaging (MRI). Due to technical limitations, teeth were omitted in many previous studies on vocal tract acoustics. However, the knowledge of how teeth influence vocal tract acoustics might be important in order to estimate the necessity of implementing teeth in vocal tract models. The aim of this study was therefore to estimate the effect of teeth on vocal tract acoustics. METHOD The acoustic properties of 18 solid (3-dimensional printed) vocal tract models without teeth were compared to the same 18 models including teeth in terms of resonance frequencies (fRn). The fRn were obtained from the transfer functions of these models excited by white noise at the glottis level. The models were derived from MRI data of 2 trained singers performing 3 different vowel conditions (/i/, /a/, and /u/) in speech and low-pitched and high-pitched singing. RESULTS Depending on the oral configuration, models exhibiting side cavities or side branches were characterized by major changes in the transfer function when teeth were implemented via the introduction of pole-zero pairs. CONCLUSIONS To avoid errors in modeling, teeth should be included in 3-dimensional vocal tract models for acoustic evaluation. SUPPLEMENTAL MATERIAL https://doi.org/10.23641/asha.5386771.
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Affiliation(s)
- Louisa Traser
- Institute of Musicians' Medicine, Freiburg University Medical Center, Germany
- Department of Otolaryngology, Freiburg University Medical Center, Germany
- Faculty of Medicine, University of Freiburg, Germany
| | - Peter Birkholz
- Institute of Acoustics and Speech Communication, Technische Universität, Dresden, Germany
| | - Tabea Viktoria Flügge
- Faculty of Medicine, University of Freiburg, Germany
- Department of Craniomaxillofacial Surgery, Freiburg University Medical Center, Germany
| | - Robert Kamberger
- Laboratory of Simulation, Department of Microsystems Engineering-IMTEK, University of Freiburg, Germany
| | - Michael Burdumy
- Faculty of Medicine, University of Freiburg, Germany
- Department of Medical Physics, Radiology, Freiburg University Medical Center, Germany
| | - Bernhard Richter
- Institute of Musicians' Medicine, Freiburg University Medical Center, Germany
- Faculty of Medicine, University of Freiburg, Germany
| | - Jan Gerrit Korvink
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Eggenstein-Leopoldshafen, Germany
| | - Matthias Echternach
- Institute of Musicians' Medicine, Freiburg University Medical Center, Germany
- Faculty of Medicine, University of Freiburg, Germany
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Echternach M, Burk F, Köberlein M, Selamtzis A, Döllinger M, Burdumy M, Richter B, Herbst CT. Laryngeal evidence for the first and second passaggio in professionally trained sopranos. PLoS One 2017; 12:e0175865. [PMID: 28467509 PMCID: PMC5414960 DOI: 10.1371/journal.pone.0175865] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2016] [Accepted: 03/31/2017] [Indexed: 11/18/2022] Open
Abstract
Introduction Due to a lack of empirical data, the current understanding of the laryngeal mechanics in the passaggio regions (i.e., the fundamental frequency ranges where vocal registration events usually occur) of the female singing voice is still limited. Material and methods In this study the first and second passaggio regions of 10 professionally trained female classical soprano singers were analyzed. The sopranos performed pitch glides from A3 (ƒo = 220 Hz) to A4 (ƒo = 440 Hz) and from A4 (ƒo = 440 Hz) to A5 (ƒo = 880 Hz) on the vowel [iː]. Vocal fold vibration was assessed with trans-nasal high speed videoendoscopy at 20,000 fps, complemented by simultaneous electroglottographic (EGG) and acoustic recordings. Register breaks were perceptually rated by 12 voice experts. Voice stability was documented with the EGG-based sample entropy. Glottal opening and closing patterns during the passaggi were analyzed, supplemented with open quotient data extracted from the glottal area waveform. Results In both the first and the second passaggio, variations of vocal fold vibration patterns were found. Four distinct patterns emerged: smooth transitions with either increasing or decreasing durations of glottal closure, abrupt register transitions, and intermediate loss of vocal fold contact. Audible register transitions (in both the first and second passaggi) generally coincided with higher sample entropy values and higher open quotient variance through the respective passaggi. Conclusions Noteworthy vocal fold oscillatory registration events occur in both the first and the second passaggio even in professional sopranos. The respective transitions are hypothesized to be caused by either (a) a change of laryngeal biomechanical properties; or by (b) vocal tract resonance effects, constituting level 2 source-filter interactions.
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Affiliation(s)
- Matthias Echternach
- Institute of Musicians’ Medicine, University of Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Fabian Burk
- Institute of Musicians’ Medicine, University of Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Marie Köberlein
- Institute of Musicians’ Medicine, University of Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Andreas Selamtzis
- Royal Technical University, Music Acoustics. Lindstedtsvägen 24, Stockholm, Sweden
| | - Michael Döllinger
- Division of Phoniatrics and Pediatric Audiology at the Department of Otorhinolaryngology Head & Neck Surgery, University Hospital Erlangen, Medical School, Waldstrasse 1, Erlangen, Germany
| | - Michael Burdumy
- Department of Medical Physics, University of Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Bernhard Richter
- Institute of Musicians’ Medicine, University of Freiburg Medical Center, Faculty of Medicine, University of Freiburg, Freiburg, Germany
| | - Christian Thomas Herbst
- Laboratory of Bio-Acoustics, Department of Cognitive Biology, University of Vienna, Althanstraße 14, Vienna, Austria
- * E-mail:
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11
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Echternach M, Burk F, Köberlein M, Herbst CT, Döllinger M, Burdumy M, Richter B. Oscillatory Characteristics of the Vocal Folds Across the Tenor Passaggio. J Voice 2017; 31:381.e5-381.e14. [DOI: 10.1016/j.jvoice.2016.06.015] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2016] [Revised: 06/24/2016] [Accepted: 06/27/2016] [Indexed: 10/21/2022]
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12
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Burdumy M, Traser L, Burk F, Richter B, Echternach M, Korvink JG, Hennig J, Zaitsev M. One-second MRI of a three-dimensional vocal tract to measure dynamic articulator modifications. J Magn Reson Imaging 2016; 46:94-101. [PMID: 27943448 DOI: 10.1002/jmri.25561] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2016] [Accepted: 11/08/2016] [Indexed: 11/10/2022] Open
Abstract
PURPOSE To enable three-dimensional (3D) vocal tract imaging of dynamic singing or speech tasks at voxel sizes of 1.6 × 1.6 × 1.3 mm3 at 1.3 s per image. MATERIALS AND METHODS A Stack-of-Stars method was implemented and enhanced to allow for fast and efficient k-space sampling of the box-shaped vocal tract using a 3 Tesla MRI system. Images were reconstructed using an off-line image reconstruction using compressed sensing theory, leading to the abovementioned spatial and temporal resolutions. To validate spatial resolution, a phantom with holes of defined sizes was measured. The applicability of the imaging method was validated in an eight-subject study of amateur singers that were required to sustain phonation at a constant pitch, past their comfortable expiratory level. A segmentation of the vocal tract over all phonation time steps was done for one subject. Anatomical distances (larynx position and pharynx width) were calculated and compared for all subjects. RESULTS Analysis of the phantom study revealed that the imaging method could provide at least 1.6 mm isotropic resolution. Visual inspection of the segmented vocal tract during phonation showed modifications of the lips, tongue, and larynx position in all three dimensions. The mean larynx position per subject amounted to 52-85 mm, deviating up to 5% over phonation time. Parameter pharynx width was 32-181 mm2 on average per subject, deviating up to 16% over phonation time. Visual inspection of the parameter course revealed no common compensation strategy for long sustained phonation. CONCLUSION The results of both phantom and in vivo measurements show the applicability of the fast 3D imaging method for voice research and indicate that modifications in all three dimensions can be observed and quantified. LEVEL OF EVIDENCE 2 Technical Efficacy: Stage 1 J. MAGN. RESON. IMAGING 2017;46:94-101.
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Affiliation(s)
- Michael Burdumy
- University Medical Center Freiburg, Department of Radiology, Medical Physics, Freiburg, Germany.,University Medical Center Freiburg, Institute of Musicians' Medicine, Freiburg, Germany
| | - Louisa Traser
- University Medical Center Freiburg, Institute of Musicians' Medicine, Freiburg, Germany.,Department of Oto-Rhino-Laryngology, Head and Neck Surgery, University Medical Center, Freiburg, Germany
| | - Fabian Burk
- University Medical Center Freiburg, Institute of Musicians' Medicine, Freiburg, Germany
| | - Bernhard Richter
- University Medical Center Freiburg, Institute of Musicians' Medicine, Freiburg, Germany
| | - Matthias Echternach
- University Medical Center Freiburg, Institute of Musicians' Medicine, Freiburg, Germany
| | - Jan G Korvink
- Institute of Microstructure Technology, Karlsruhe Institute of Technology, Karlsruhe, Germany
| | - Jürgen Hennig
- University Medical Center Freiburg, Department of Radiology, Medical Physics, Freiburg, Germany
| | - Maxim Zaitsev
- University Medical Center Freiburg, Department of Radiology, Medical Physics, Freiburg, Germany
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13
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Echternach M, Burk F, Burdumy M, Herbst CT, Köberlein M, Döllinger M, Richter B. The influence of vocal fold mass lesions on the passaggio region of professional singers. Laryngoscope 2016; 127:1392-1401. [DOI: 10.1002/lary.26332] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2016] [Revised: 08/10/2016] [Accepted: 08/30/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Matthias Echternach
- Institute of Musicians' Medicine; Freiburg University Medical Center; Freiburg Germany
| | - Fabian Burk
- Institute of Musicians' Medicine; Freiburg University Medical Center; Freiburg Germany
| | - Michael Burdumy
- Division of Radiology; Department of Medical Physics; Freiburg University Medical Center; Freiburg Germany
| | - Christian T. Herbst
- Laboratory of Bio-Acoustics, Department of Cognitive Biology; University of Vienna; Vienna Austria
| | - Marie Köberlein
- Institute of Musicians' Medicine; Freiburg University Medical Center; Freiburg Germany
| | - Michael Döllinger
- Division of Phoniatrics and Pediatric Audiology; Department of Otorhinolaryngology-Head & Neck Surgery; University Hospital Erlangen Medical School; Erlangen Germany
| | - Bernhard Richter
- Institute of Musicians' Medicine; Freiburg University Medical Center; Freiburg Germany
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14
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Echternach M, Burk F, Burdumy M, Traser L, Richter B. Morphometric Differences of Vocal Tract Articulators in Different Loudness Conditions in Singing. PLoS One 2016; 11:e0153792. [PMID: 27096935 PMCID: PMC4838265 DOI: 10.1371/journal.pone.0153792] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2015] [Accepted: 04/04/2016] [Indexed: 11/30/2022] Open
Abstract
Introduction Dynamic MRI analysis of phonation has gathered interest in voice and speech physiology. However, there are limited data addressing the extent to which articulation is dependent on loudness. Material and Methods 12 professional singer subjects of different voice classifications were analysed concerning the vocal tract profiles recorded with dynamic real-time MRI with 25fps in different pitch and loudness conditions. The subjects were asked to sing ascending scales on the vowel /a/ in three loudness conditions (comfortable = mf, very soft = pp, very loud = ff, respectively). Furthermore, fundamental frequency and sound pressure level were analysed from the simultaneously recorded optical audio signal after noise cancellation. Results The data show articulatory differences with respect to changes of both pitch and loudness. Here, lip opening and pharynx width were increased. While the vertical larynx position was rising with pitch it was lower for greater loudness. Especially, the lip opening and pharynx width were more strongly correlated with the sound pressure level than with pitch. Conclusion For the vowel /a/ loudness has an effect on articulation during singing which should be considered when articulatory vocal tract data are interpreted.
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Affiliation(s)
- Matthias Echternach
- Institute of Musicians’ Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
- * E-mail:
| | - Fabian Burk
- Institute of Musicians’ Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
| | - Michael Burdumy
- Institute of Musicians’ Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
- Department of Medical Physics, Radiology, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
| | - Louisa Traser
- Institute of Musicians’ Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
- Department of Otorhinolaryngology, Freiburg University Medical Center, Kilianstr. 5, 79106 Freiburg, Germany
| | - Bernhard Richter
- Institute of Musicians’ Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
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15
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Özen AC, Traser L, Echternach M, Dadakova T, Burdumy M, Richter B, Bock M. Ensuring safety and functionality of electroglottography measurements during dynamic pulmonary MRI. Magn Reson Med 2015; 76:1629-1635. [PMID: 26599237 DOI: 10.1002/mrm.26037] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2015] [Revised: 10/14/2015] [Accepted: 10/15/2015] [Indexed: 11/06/2022]
Abstract
PURPOSE To combine vocal tract measurements with dynamic MRI of the lungs to provide fundamental insights into the lung physiology during singing. METHODS To analyze vocal fold oscillatory patterns during dynamic lung MRI, an electroglottography (EGG) system was modified to allow for simultaneous EGG measurements during MR image acquisitions. A low-pass filter was introduced to suppress residual radiofrequency (RF) coupling into the EGG signal. RF heating was tested in a gel phantom to ensure MR safety, and functionality of the EGG device was assessed in a volunteer experiment at singing frequencies from A5 to A3. In the recorded EGG signals, remaining RF interferences were removed by independent component analysis post processing, and standard EGG parameters such as fundamental frequency, contact quotient and jitter were calculated. In a second volunteer experiment, EGG recordings were compared with lung diameter measurements from 2D time-resolved trueFISP acquisitions. RESULTS RF heating measurements resulted in less than 1.2°C temperature increase in the gel phantom. EGG parameters measured during MR imaging are within the range of ideal values. In the lung measurement, both the lung diameter and the EGG recordings could be successfully performed with only minimal interference. CONCLUSION EGG recording is pos sible during dynamic lung MRI, and glottal activity can be studied safely at 1.5T. Magn Reson Med 76:1629-1635, 2016. © 2015 International Society for Magnetic Resonance in Medicine.
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Affiliation(s)
- Ali Caglar Özen
- Department of Radiology-Medical Physics, University Medical Center Freiburg, Germany.
| | - Louisa Traser
- Institute of Musicians Medicine, University Medical Center Freiburg, Germany.,Department of Otolaryngology, University Medical Center Freiburg, Germany
| | - Matthias Echternach
- Institute of Musicians Medicine, University Medical Center Freiburg, Germany
| | - Tetiana Dadakova
- Department of Radiology-Medical Physics, University Medical Center Freiburg, Germany
| | - Michael Burdumy
- Department of Radiology-Medical Physics, University Medical Center Freiburg, Germany
| | - Bernhard Richter
- Institute of Musicians Medicine, University Medical Center Freiburg, Germany
| | - Michael Bock
- Department of Radiology-Medical Physics, University Medical Center Freiburg, Germany
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Echternach M, Birkholz P, Traser L, Flügge TV, Kamberger R, Burk F, Burdumy M, Richter B. Articulation and vocal tract acoustics at soprano subject's high fundamental frequencies. J Acoust Soc Am 2015; 137:2586-2595. [PMID: 25994691 DOI: 10.1121/1.4919356] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
Abstract
The role of the vocal tract for phonation at very high soprano fundamental frequencies (F0s) is not yet understood in detail. In this investigation, two experiments were carried out with a single professional high soprano subject. First, using two dimensional (2D) dynamic real-time magnetic resonance imaging (MRI) (24 fps) midsagittal and coronal vocal tract shapes were analyzed while the subject sang a scale from Bb5 (932 Hz) to G6 (1568 Hz). In a second experiment, volumetric vocal tract MRI data were recorded from sustained phonations (13 s) for the pitches C6 (1047 Hz) and G6 (1568 Hz). Formant frequencies were measured in physical models created by 3D printing, and calculated from area functions obtained from the 3D vocal tract shapes. The data showed that there were only minor modifications of the vocal tract shape. These changes involved a decrease of the piriform sinus as well as small changes of tongue position. Formant frequencies did not exhibit major differences between C6 and G6 for F1 and F3, respectively. Only F2 was slightly raised for G6. For G6, however, F2 is not excited by any voice source partial. Therefore, this investigation was not able to confirm that the analyzed professional soprano subject adjusted formants to voice source partials for the analyzed F0s.
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Affiliation(s)
- Matthias Echternach
- Institute of Musicians' Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
| | - Peter Birkholz
- Institute of Acoustics and Speech Communication, Technische Universität Dresden, Dresden, 01062 Dresden, Germany
| | - Louisa Traser
- Institute of Musicians' Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
| | - Tabea V Flügge
- Department of Craniomaxillofacial Surgery, Freiburg University Medical Center, Hugstetterstr. 55, 79106 Freiburg, Germany
| | - Robert Kamberger
- Laboratory of Simulation, Department of Microsystems Engineering-IMTEK, University of Freiburg, Georges-Köhler-Allee 102, 79110 Freiburg, Germany
| | - Fabian Burk
- Institute of Musicians' Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
| | - Michael Burdumy
- Department of Radiology, Medical Physics, Freiburg University Medical Center, Breisacher Str. 60a, 79106 Freiburg, Germany
| | - Bernhard Richter
- Institute of Musicians' Medicine, Freiburg University Medical Center, Breisacher Str. 60, 79106 Freiburg, Germany
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17
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Burdumy M, Traser L, Richter B, Echternach M, Korvink JG, Hennig J, Zaitsev M. Acceleration of MRI of the vocal tract provides additional insight into articulator modifications. J Magn Reson Imaging 2015; 42:925-35. [PMID: 25647755 DOI: 10.1002/jmri.24857] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2014] [Accepted: 01/09/2015] [Indexed: 11/05/2022] Open
Abstract
PURPOSE To accelerate dynamic imaging of the vocal tract during articulation. MATERIALS AND METHODS Five subjects were imaged by magnetic resonance imaging (MRI) while repeating the word "Partikel" at 90 beats per minute, using both a radio-frequency-spoiled radial gradient echo sequence with golden angle projection rotation and a previously applied real-time Cartesian sequence. The acquired data were reconstructed using a CG-SENSE method and Cartesian reconstruction. The images from both methods were compared by measuring distances between anatomical landmarks that are important for resonance behavior of the vocal tract. Only commonly available hardware and software were used. RESULTS With the presented radial method a spatial resolution of 1.8 mm at 25 frames per second could be achieved. Overall, the morphometric measurements of the vocal tract showed less deviation for the radial sequence both across repetitions and for all subjects. Fast modifications, such as complete lip closing, could be analyzed with greater fidelity using the high temporal resolution of the radial sequence. CONCLUSION The results indicate that higher temporal resolution is a necessity to catch fast morphometric changes in the vocal tract.
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Affiliation(s)
- Michael Burdumy
- University Medical Center Freiburg, Department of Radiology, Medical Physics, Freiburg, Germany.,Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany
| | - Louisa Traser
- Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany.,Department of Oto-Rhino-Laryngology, Head and Neck Surgery, University Medical Center, Freiburg, Germany
| | - Bernhard Richter
- Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany
| | - Matthias Echternach
- Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany
| | - Jan G Korvink
- IMTEK, University Freiburg, Lab of Simulation, Freiburg, Germany
| | - Jürgen Hennig
- University Medical Center Freiburg, Department of Radiology, Medical Physics, Freiburg, Germany
| | - Maxim Zaitsev
- University Medical Center Freiburg, Department of Radiology, Medical Physics, Freiburg, Germany
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Traser L, Burdumy M, Richter B, Vicari M, Echternach M. Weight-bearing MR imaging as an option in the study of gravitational effects on the vocal tract of untrained subjects in singing phonation. PLoS One 2014; 9:e112405. [PMID: 25379885 PMCID: PMC4224454 DOI: 10.1371/journal.pone.0112405] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2014] [Accepted: 10/15/2014] [Indexed: 11/18/2022] Open
Abstract
Magnetic Resonance Imaging (MRI) of subjects in a supine position can be used to evaluate the configuration of the vocal tract during phonation. However, studies of speech phonation have shown that gravity can affect vocal tract shape and bias measurements. This is one of the reasons that MRI studies of singing phonation have used professionally trained singers as subjects, because they are generally considered to be less affected by the supine body position and environmental distractions. A study of untrained singers might not only contribute to the understanding of intuitive singing function and aid the evaluation of potential hazards for vocal health, but also provide insights into the effect of the supine position on singers in general. In the present study, an open configuration 0.25 T MRI system with a rotatable examination bed was used to study the effect of body position in 20 vocally untrained subjects. The subjects were asked to sing sustained tones in both supine and upright body positions on different pitches and in different register conditions. Morphometric measurements were taken from the acquired images of a sagittal slice depicting the vocal tract. The analysis concerning the vocal tract configuration in the two body positions revealed differences in 5 out of 10 measured articulatory parameters. In the upright position the jaw was less protruded, the uvula was elongated, the larynx more tilted and the tongue was positioned more to the front of the mouth than in the supine position. The findings presented are in agreement with several studies on gravitational effects in speech phonation, but contrast with the results of a previous study on professional singers of our group where only minor differences between upright and supine body posture were observed. The present study demonstrates that imaging of the vocal tract using weight-bearing MR imaging is a feasible tool for the study of sustained phonation in singing for vocally untrained subjects.
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Affiliation(s)
- Louisa Traser
- Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany; Department of Oto-Rhino-Laryngology, Head and Neck Surgery, University Medical Center, Freiburg, Germany
| | - Michael Burdumy
- Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany; Department of Radiology, Medical Physics, University Medical Center, Freiburg, Germany
| | - Bernhard Richter
- Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany
| | - Marco Vicari
- Fraunhofer MEVIS, Bremen, Germany; Esaote S.p.A., Genoa, Italy
| | - Matthias Echternach
- Institute of Musicians' Medicine, University Medical Center, Freiburg, Germany
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Traser L, Burdumy M, Richter B, Vicari M, Echternach M. The Effect of Supine and Upright Position on Vocal Tract Configurations During Singing—A Comparative Study in Professional Tenors. J Voice 2013; 27:141-8. [DOI: 10.1016/j.jvoice.2012.11.002] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Accepted: 11/13/2012] [Indexed: 10/27/2022]
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20
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Burdumy M, Luik A, Neher P, Hanna R, Krueger MW, Schilling C, Barschdorf H, Lorenz C, Seemann G, Schmitt C, Doessel O, Weber FM. Comparing measured and simulated wave directions in the left atrium - a workflow for model personalization and validation. ACTA ACUST UNITED AC 2012; 57:79-87. [PMID: 22505490 DOI: 10.1515/bmt-2011-0059] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2011] [Accepted: 01/05/2012] [Indexed: 11/15/2022]
Abstract
Atrial arrhythmias are frequently treated using catheter ablation during electrophysiological (EP) studies. However, success rates are only moderate and could be improved with the help of personalized simulation models of the atria. In this work, we present a workflow to generate and validate personalized EP simulation models based on routine clinical computed tomography (CT) scans and intracardiac electrograms. From four patient data sets, we created anatomical models from angiographic CT data with an automatic segmentation algorithm. From clinical intracardiac catheter recordings, individual conduction velocities were calculated. In these subject-specific EP models, we simulated different pacing maneuvers and measurements with circular mapping catheters that were applied in the respective patients. This way, normal sinus rhythm and pacing from a coronary sinus catheter were simulated. Wave directions and conduction velocities were quantitatively analyzed in both clinical measurements and simulated data and were compared. On average, the overall difference of wave directions was 15° (8%), and the difference of conduction velocities was 16 cm/s (17%). The method is based on routine clinical measurements and is thus easy to integrate into clinical practice. In the long run, such personalized simulations could therefore assist treatment planning and increase success rates for atrial arrhythmias.
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Affiliation(s)
- Michael Burdumy
- Institute of Biomedical Engineering , Karlsruhe Institute of Technology, Karlsruhe, Germany
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Krueger MW, Schmidt V, Tobón C, Weber FM, Lorenz C, Keller DUJ, Barschdorf H, Burdumy M, Neher P, Plank G, Rhode K, Seemann G, Sanchez-Quintana D, Saiz J, Razavi R, Dössel O. Modeling Atrial Fiber Orientation in Patient-Specific Geometries: A Semi-automatic Rule-Based Approach. Functional Imaging and Modeling of the Heart 2011. [DOI: 10.1007/978-3-642-21028-0_28] [Citation(s) in RCA: 49] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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