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Effects of Nasaliza...
Effects of Nasalization on Vocal Tract Response Curve
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- Havel, Miriam (author)
- Division of Phoniatrics and Pediatric Audiology, Dept. of Otorhinolaryngology, Head and Neck Surgery, Munich University Hospital
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- Sundberg, Johan (author)
- Stockholms universitet,KTH,Tal, musik och hörsel, TMH,Dept. of Linguistics, Stockholm University, Stockholm, Sweden,Institutionen för lingvistik,KTH (Royal Institute of Technology), Sweden; University College of Music Education Stockholm, Sweden
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- Traser, Louisa (author)
- Institute of Musicians' Medicine, Medical Center - University of Freiburg, Germany
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- Burdumy, Michael (author)
- Dept. of Radiology, Medical Physics, Medical Center - University of Freiburg, Germany
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- Echternach, Matthias (author)
- Division of Phoniatrics and Pediatric Audiology, Department of Otorhinolaryngology, Munich University Hospital (LMU), Munich, Germany
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Division of Phoniatrics and Pediatric Audiology, Dept of Otorhinolaryngology, Head and Neck Surgery, Munich University Hospital Tal, musik och hörsel, TMH (creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
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In: Journal of Voice. - : Elsevier BV. - 0892-1997 .- 1873-4588.
- Related links:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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https://urn.kb.se/re...
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Abstract
Subject headings
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- 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.
Subject headings
- NATURVETENSKAP -- Data- och informationsvetenskap -- Språkteknologi (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences -- Language Technology (hsv//eng)
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Oto-rhino-laryngologi (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Otorhinolaryngology (hsv//eng)
Keyword
- Vocal tract–Nasal tract–Velopharyngeal opening–Transfer function–Sine sweep excitation–Spectrum balance
- article
- controlled study
- excitation
- in vivo study
- nuclear magnetic resonance imaging
- paranasal sinus
- vowel
Publication and Content Type
- ref (subject category)
- art (subject category)
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