タイトル無し

概要

論文の詳細を見る
In order to analyze hoarseness of the voice disorders, new phonation analyzer was used. The voice was put in a hot wire spirometer (MINATO IKA Co. LTD, Japan) and was memorized by a memory circuit. The date was visualized by an oscilloscope or pen writing recorder. The human voice was analyzed from viewpoints of the parameters of the intensity, pitch and mean flow rate. An oscilloscope, part of the apparatus, was enable to demonstrate the relationship between intensity-mean flow rate, pitch-mean flow rate and intensity-pitch dimentionally. For instance, the value was plotted as a brilliant spot in abscissa for intensity and in ordinate for mean flow rate via a feed back memory system. The examinee was vocalized /a: / by a mouth piece, and was spoken of a paragraph by a mask. The maximum sustained phonation time was measured automatically. Twenty adult female and ten adult male were volunteers, aged from twenty to forty eight. The curve in male which was demonstrated by intensity (abscissa) and mean flow rate (ordinate) was characteristic as a unique pattern compared with the one in female. Generally in male (normal subject), the mean flow rate was minimum in moderate intensity of speech range and was gradually increased from minimum intensity to maximum in order. Change in intensity-mean flow rate of female was not dynamic. After the normal pattern of each relationship among intensity, pitch and mean flow rate was decided, the voice disorders were checked and compared. A vocal cord polyp, a laryngeal nodule and recurrent laryngeal nerve palsy showed characteristic patterns.

タイトル無し

スポンサーリンク

概要

著者

関連論文

スポンサーリンク