書誌事項
- タイトル別名
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- Multiparametric display of vocal dysfunction: Use of radar chart.
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説明
The authors proposed a new method of the multiparametric display of vocal function using a radar chart. The purpose is to visualize the degree and feature of vocal dysfunction in various laryngeal diseases. The parameters analyzed were the fundamental frequency (F0), intensity of the voice, the transglottic air flow rate (F.R.) and AC/DC ratio of the expiratory air flow, which were simultaneously recorded during phonation of the vowel /a/ in the following five different fashions: easy, high-loud, high-soft low-loud and low-soft. The radar chart for easy phonation consists of four axes (F0, Intensity, F.R. and AC/DC ratio) arranged rectangularly, and the scales were determined to give a regular square for normal subjects. The radar charts for high and low pitched voices consist of six axes (F.R. and AC/DC ratio of loud and soft voices respectively, Fα and Intensity), and the scales were determined to give a regular hexagon for normal subjects. <br>The new display was valuable for investigating the degree and feature of vocal dysfunction and for judging therapeutic effects.
収録刊行物
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- 日本耳鼻咽喉科学会会報
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日本耳鼻咽喉科学会会報 89 (4), 448-454, 1986
一般社団法人 日本耳鼻咽喉科頭頸部外科学会
