Control Mechanism of Vocal Intensity in Normal Subjects.
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- Iwata Shigenobu
- Department of Otolaryngology, Fujita Health University, School of Medicine
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- Takeuchi Kenji
- Department of Otolaryngology, Fujita Health University, School of Medicine
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- Iwata Yoshihiro
- Department of Otolaryngology, Fujita Health University, School of Medicine
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- Kojima Hidetugu
- Department of Otolaryngology, Fujita Health University, School of Medicine
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- Ohyama Toshihiro
- Department of Otolaryngology, Fujita Health University, School of Medicine
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- Takashu Akihiko
- Department of Otolaryngology, Fujita Health University, School of Medicine
Bibliographic Information
- Other Title
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- 空気力学的にみた発声機序 声の高さの調節
- ―声の高さの調節―
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Abstract
We studied the regulatory mechanism for vocal intensity by aerodynamic phonatory examination, including direct extraction of subglottic pressure through the glottis. PS-77 phonatory test equipment and the PI-100 phonatory analyzing system were applied to measure air flow rate, pitch and intensity of voice, subglottic pressure, glottal resistance, subglottal power and laryngeal efficiency.<BR>9 normal subjects (4 males and 5 females) were tested in the following ways:<BR>1) easy phonation for several seconds:<BR>2) phonation from weak to louder (crescendo) continuously within one breath, keeping the same pitch level in the chest and falsetto registers.<BR>Results: In the easy phonation, the values of subglottic pressure, glottal resistance, laryngeal efficiency showed no difference between males and females, but the values of subglottic power in men were larger than those in females.<BR>In the crescendo in the chest register, values of subglottic pressure, glottal resistance, glottal power and laryngeal efficency increased linearly, but the air flow rate did not change intensity increased. In the falsetto register, high values were observed for air flow rate, subglottic pressure, glottal resistance and glottic power, while a low value of laryngeal efficiency was observed compared to the chest register at the same intensity level.These parameters all increased in parallel with increasing intensities, with close correlations.
Journal
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- The Japan Journal of Logopedics and Phoniatrics
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The Japan Journal of Logopedics and Phoniatrics 36 (3), 338-349, 1995
The Japan Society of Logopedics and Phoniatrics
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Details 詳細情報について
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- CRID
- 1390282679876500736
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- NII Article ID
- 10007697954
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- NII Book ID
- AN00034826
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- ISSN
- 18843646
- 00302813
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- Text Lang
- ja
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed