Journal article
Vocal intensity in speakers and singers
The Journal of the Acoustical Society of America, Vol.91(5), pp.2936-2946
05/01/1992
DOI: 10.1121/1.402929
PMID: 1629486
Abstract
Vocal intensity is studied as a function of fundamental frequency and lung pressure. A combination of analytical and empirical models is used to predict sound pressure levels from glottal waveforms of five professional tenors and twenty five normal control subjects. The glottal waveforms were obtained by inverse filtering the mouth flow. Empirical models describe features of the glottal flow waveform (peak flow, peak flow derivative, open quotient, and speed quotient) in terms of lung pressure and phonation threshold pressure, a key variable that incorporates the F0 dependence of many of the features of the glottal flow. The analytical model describes the contributions to sound pressure levels SPL by the vocal tract. Results show that SPL increases with F0 at a rate of 8–9 dB/octave provided that lung pressure is raised proportional to phonation threshold pressure. The SPL also increases at a rate of 8–9 dB per doubling of excess pressure over threshold, a new quantity that assumes considerable importance in vocal intensity calculations. For the same excess pressure over threshold, the professional tenors produced 10–12 dB greater intensity than the male nonsingers, primarily because their peak airflow was much higher for the same pressures. A simple set of rules is devised for predicting SPL from source waveforms.
Details
- Title: Subtitle
- Vocal intensity in speakers and singers
- Creators
- Ingo R. Titze - Denver Center for the Performing ArtsJohan Sundberg - KTH Royal Institute of Technology
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.91(5), pp.2936-2946
- DOI
- 10.1121/1.402929
- PMID
- 1629486
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Number of pages
- 11
- Language
- English
- Date published
- 05/01/1992
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719570502771
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