Stimulated production of vowel-like LX-waveforms and spectral damping in the absence of phonation.
Affiliation
North Western Medical Physics, Christie Hospital, Manchester, UK. infcjm@dalpha2.cr.man.ac.ukIssue Date
2002
Metadata
Show full item recordAbstract
Electrical impedance 'LX' waveforms measured across the neck at the thyroid level during phonation are known to be correlated with vocal fold movement. Changes in vocal fold contact are thought to be the cause of this phenomenon though emerging applications in radiotherapy indicate that changes in the configuration of both fold and neck tissues are correlated with LX waveform shape. In this paper it is shown that a two-stage tissue damping model with controlled bandpass and passive low pass components is consistent with evidence from gradually degraded, controlled phonation. In particular it is shown that an externally applied stimulus to the vertebral processes of the neck can produce similar impedance waveforms in the absence of phonation and hence no controlled fold contact. It is postulated that this is initial evidence suggesting that both pressure waves and vocal fold contact components contribute to the production of the classical 'LX' waveform.Citation
Stimulated production of vowel-like LX-waveforms and spectral damping in the absence of phonation., 24 (7-8):461-5 Med Eng PhysJournal
Medical Engineering & PhysicsDOI
10.1016/S1350-4533(02)00065-6PubMed ID
12237040Type
ArticleLanguage
enISSN
1350-4533ae974a485f413a2113503eed53cd6c53
10.1016/S1350-4533(02)00065-6
Scopus Count
Collections
Related articles
- Investigation of the immediate effects of two semi-ocluded vocal tract exercises.
- Authors: Sampaio M, Oliveira G, Behlau M
- Issue date: 2008 Oct-Dec
- Nonlinear source-filter coupling in phonation: theory.
- Authors: Titze IR
- Issue date: 2008 May
- Effects of consonant manner and vowel height on intraoral pressure and articulatory contact at voicing offset and onset for voiceless obstruents.
- Authors: Koenig LL, Fuchs S, Lucero JC
- Issue date: 2011 May
- Electroglottography and laryngeal articulation in speech.
- Authors: Hong KH, Kim HK
- Issue date: 1997
- Laryngograph as a measure of vocal fold contact area.
- Authors: Gilbert HR, Potter CR, Hoodin R
- Issue date: 1984 Jun