著者

大山 勝 三吉 康郎 荘司 邦夫 山本 真平 谷口 知恵子 渡辺 真吾 井 研治

出版者

The Oto-Rhino-Laryngological Society of Japan, Inc.

雑誌

日本耳鼻咽喉科学会会報 (ISSN:00306622)

巻号頁・発行日

vol.79, no.9, pp.963-972, 1976-09-20 (Released:2008-03-19)

参考文献数

9

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The bone-conducted vowels were picked up by the vibration transducer of the accelerationtype applying to three anatomical sites on the heads (forehead, upper jaw and mastoid region)of the healthy adults.A comparative studies on the speech signals from these three regions of the head were done acoustically. The results were summarized as follows; i) for the pickup of speech signals from the body surface, the vibration transducer of small acceleration type (Rion Co. PV-06)was the most satisfactory in point of a signal-to-noise ratio, intelligibility of the speech and practical use. 2) the relative intensities of the speech signals were decreased in regular order i, u, e, o and a. 3) the spectral characteristics of these vowels were highly similar to those which were recorded from the micropone at the position in the distance of 30 cm from the lips, although there was an inclination of the increased low-frequency components with the decrease of high-frequency in the spectrum. 4) from the results of the articulation score, intelligibility of the vowels was much better in recorded sounds from the upper jaw and forehead compared with that from the mastoid region.

著者

大山 勝 勝田 兼司 大野 聖 大野 郁夫 山本 真平 谷口 強 肥高 洋

出版者

耳鼻と臨床会

雑誌

耳鼻と臨床 (ISSN:04477227)

巻号頁・発行日

vol.25, no.2, pp.779-789, 1979

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Two cases of rhinoliths in a male aged 18 years and a female aged 52 years who complained of nasal obstruction with mucopurulent and sometimes, bloodstained discharge were reported. The fresh specimens of nasal calculi removed in the former case weighed 4.5 grammes and 3.0 grammes in the latter.<BR>In the scanning electron micrographs the core like as nucleus with furrow and polous structure were found.<BR>Electron probe X-rays microanalysis showed that S element was concentrically detected in the core and furrow, while Ca, P, Mg, Si, Al and Na levels were recognized much more highly in the surrounding polous or solid parts compared with that of the nuclei.<BR>From these ultrastructural characteristics and chemical composition, the genesis of rhinoliths were discussed.