Journal article
Comparison between electroglottography and electromagnetic glottography
The Journal of the Acoustical Society of America, Vol.107(1), pp.581-588
01/01/2000
DOI: 10.1121/1.428324
PMID: 10641666
Abstract
Newly developed glottographic sensors, utilizing high-frequency propagating electromagnetic waves, were compared to a well-established electroglottographic device. The comparison was made on four male subjects under different phonation conditions, including three levels of vocal fold adduction (normal, breathy, and pressed), three different registers (falsetto, chest, and fry), and two different pitches. Agreement between the sensors was always found for the glottal closure event, but for the general wave shape the agreement was better for falsetto and breathy voice than for pressed voice and vocal fry. Differences are attributed to the field patterns of the devices. Whereas the electroglottographic device can operate only in a conduction mode, the electromagnetic device can operate in either the forward scattering (diffraction) mode or in the backward scattering (reflection) mode. Results of our tests favor the diffraction mode because a more favorable angle imposed on receiving the scattered (reflected) signal did not improve the signal strength. Several observations are made on the uses of the electromagnetic sensors for operation without skin contact and possibly in an array configuration for improved spatial resolution within the glottis.
Details
- Title: Subtitle
- Comparison between electroglottography and electromagnetic glottography
- Creators
- Ingo R. Titze - Denver Center for the Performing ArtsBrad H. Story - Denver Center for the Performing ArtsGregory C. Burnett - Lawrence Livermore National LaboratoryJohn F. Holzrichter - Lawrence Livermore National LaboratoryLawrence C. Ng - Lawrence Livermore National LaboratoryWayne A. Lea
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.107(1), pp.581-588
- DOI
- 10.1121/1.428324
- PMID
- 10641666
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Number of pages
- 8
- Language
- English
- Date published
- 01/01/2000
- Academic Unit
- School of Music; Communication Sciences and Disorders
- Record Identifier
- 9984719749502771
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