2 0 0 0 OA 水中聴覚における外耳道の空気泡の影響について
- 著者
- 倉本 和興 老松 建成 桑原 信也 山口 静馬
- 出版者
- 特定非営利活動法人 海洋音響学会
- 雑誌
- 海洋音響学会誌 (ISSN:09165835)
- 巻号頁・発行日
- vol.31, no.2, pp.81-85, 2004-04-01 (Released:2011-03-02)
- 参考文献数
- 9
In order to examine the effects of air bubble in the ear canal for underwater hearing, detailed measurement of minimum audible field (MAF) in audio frequency (50Hz-8kHz) and comparison of loudness were carried out at two conditions as below, 1) the air bubble remains in the ear canal and 2) the ear canal is filled with water. As the result, in the high frequency region over about 300 Hz, it is highly sensitive to hearing in the case that the air bubble remained in the ear canal. In the low frequency region under 300 Hz, it becomes more sensitive in the case that the ear canal was filled with the water by removing the air bubble.The reverse phenomenon of “hearing” at about 300 Hz is explained by difference between frequency characteristics of the occlusion effect (air conduction) and the effect in which the ear canal was filled with the water (bone conduction).
1 0 0 0 OA 海洋音響工学の基礎 [I]
- 著者
- 漆原 清
- 出版者
- 特定非営利活動法人 海洋音響学会
- 雑誌
- 海洋音響研究会報 (ISSN:18847927)
- 巻号頁・発行日
- vol.1, no.1, pp.8-14, 1974-03-25 (Released:2011-03-02)
- 参考文献数
- 21
1 0 0 0 OA 超深海11,000 m級トランスポンダ
- 著者
- 澤 隆雄 青木 太郎 大澤 弘敬 井上 朝哉 田原 順一郎 伊藤 和彰 吉田 弘 石橋 正二郎 渡辺 佳孝
- 出版者
- 特定非営利活動法人 海洋音響学会
- 雑誌
- 海洋音響学会誌 (ISSN:09165835)
- 巻号頁・発行日
- vol.36, no.1, pp.26-32, 2009 (Released:2009-08-18)
- 参考文献数
- 7
- 被引用文献数
- 1
The Japan Agency for Marine-Earth Science and Technology is developing an automatic bottom inspection and sampling mobile (ABISMO), which is a full-depth rating ROV (Remotely Operated Vehicle) for reaching to the deepest sea bottom, observing it with a camera and sampling the bottom layer. ABISMO consists of a launcher and a vehicle. The launcher is a kind of depressor with many observation devices, and the vehicle is an underwater crawler to move on the sea bottom and inspect it. The mother ship can determine the vehicle's position directly with the ultra-deepwater transponder. The transponder is small and lightweight, with a release system, and it operates at about a 14-kHz frequency. The frequency is higher than that of a conventional full-depth transponder, and it features greater navigation accuracy in shallow water, where many ROV do most of their work. These advantages are emphasized when the transponder is loaded onto an ultra-deepwater vehicle, which needs to be small and lightweight.
1 0 0 0 OA 海洋音響工学の基礎 [III]
- 著者
- 漆原 清
- 出版者
- 特定非営利活動法人 海洋音響学会
- 雑誌
- 海洋音響研究会報 (ISSN:18847927)
- 巻号頁・発行日
- vol.2, no.1, pp.5-13, 1975-02-25 (Released:2011-03-02)
- 参考文献数
- 11
1 0 0 0 OA 海洋音響工学の基礎 [IV]
- 著者
- 漆原 清
- 出版者
- 特定非営利活動法人 海洋音響学会
- 雑誌
- 海洋音響研究会報 (ISSN:18847927)
- 巻号頁・発行日
- vol.3, no.1, pp.4-11, 1976-01-31 (Released:2011-03-02)
- 参考文献数
- 11
1 0 0 0 OA 海洋音響工学の基礎 [II]
- 著者
- 漆原 清
- 出版者
- 特定非営利活動法人 海洋音響学会
- 雑誌
- 海洋音響研究会報 (ISSN:18847927)
- 巻号頁・発行日
- vol.1, no.2, pp.1-11, 1974-06-15 (Released:2011-03-02)
- 参考文献数
- 17
1 0 0 0 OA 水中伝搬音に対する障壁の回折減衰特性
- 著者
- 山口 静馬 倉本 和興 桑原 信也 老松 建成
- 出版者
- 特定非営利活動法人 海洋音響学会
- 雑誌
- 海洋音響学会誌 (ISSN:09165835)
- 巻号頁・発行日
- vol.18, no.4, pp.209-212, 1991 (Released:2011-03-02)
- 参考文献数
- 9