Journal article
Normal vibration frequencies of the vocal ligament
The Journal of the Acoustical Society of America, Vol.115(5 Pt 1), pp.2264-2269
05/01/2004
DOI: 10.1121/1.1698832
PMCID: PMC1552154
PMID: 15139637
Abstract
The vocal ligament is the tension-bearing element in the vocal folds at high pitches. It has traditionally been treated as a vibrating string, with only length and longitudinal stress governing its normal mode frequencies. Results of this investigation show that, when bending stiffness and variable cross section are included, the lowest normal mode frequency can more than double, depending on the strain of the ligament. This suggests that much higher phonation frequencies may be achievable than heretofore thought for a given vocal fold length (e.g., nearly 1000 Hz at 50% elongation over cadaveric resting length). It also brings back into the discussion the concept of "damping," an old misnomer for a reduction of the effective length of vibration of the vocal folds by relatively stiff boundary segments known as macula flavae. A formula is given for correcting the ideal string equation for the lowest mode frequency to include bending stiffness and macula flavae effects.
Details
- Title: Subtitle
- Normal vibration frequencies of the vocal ligament
- Creators
- Ingo R Titze - University of IowaEric J Hunter - Denver Center for the Performing Arts
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.115(5 Pt 1), pp.2264-2269
- DOI
- 10.1121/1.1698832
- PMID
- 15139637
- PMCID
- PMC1552154
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Grant note
- R01 DC004347 / NIDCD NIH HHS 1 R01 DC04347 / NIDCD NIH HHS
- Language
- English
- Date published
- 05/01/2004
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984446450902771
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