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Mass Storage Digital Ocean Bottom Seismometer and Hydrophone (DOBSH) Controlled by Micro-processors Using ADPCM Voice Synthesizing
https://doi.org/10.15083/0000032903
https://doi.org/10.15083/00000329034c1ed475-76f0-4aee-b973-e2626a30244b
| 名前 / ファイル | ライセンス | アクション |
|---|---|---|
ji0601002.pdf (1.1 MB)
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| Item type | 紀要論文 / Departmental Bulletin Paper(1) | |||||
|---|---|---|---|---|---|---|
| 公開日 | 2008-05-30 | |||||
| タイトル | ||||||
| タイトル | Mass Storage Digital Ocean Bottom Seismometer and Hydrophone (DOBSH) Controlled by Micro-processors Using ADPCM Voice Synthesizing | |||||
| 言語 | en | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源 | http://purl.org/coar/resource_type/c_6501 | |||||
| タイプ | departmental bulletin paper | |||||
| ID登録 | ||||||
| ID登録 | 10.15083/0000032903 | |||||
| ID登録タイプ | JaLC | |||||
| その他のタイトル | ||||||
| その他のタイトル | ADPCM方式を用いたマイクロ・プロセッサー制御,大容量ハイドロフォン付きデジタル海底地震計 | |||||
| 著者 |
笠原, 順三
× 笠原, 順三× 高橋, 正義× 松原, 忠泰× 小宮, 光昇 |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 128309 | |||||
| 姓名 | Kasahara, Junzo | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 128310 | |||||
| 姓名 | Takahashi, Masayoshi | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 128311 | |||||
| 姓名 | Matsubara, Tadayasu | |||||
| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 128312 | |||||
| 姓名 | Komiya, Mitsunobu | |||||
| 著者所属 | ||||||
| 著者所属 | 東京大学地震研究所 | |||||
| 著者所属 | ||||||
| 著者所属 | 海外物産株式会社 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | A DOBSH (Digital Ocean Bottom Seismometer and Hydrophone) and PDER (Portable Digital Event Recorder) have been newly developed. Main features are : storage of a large number of events, namely, 750 events on 4 channels, 2-minutes each and 100 Hz sampling rate ; including ADPCM (Adaptive Differential Pulse Code Modulation) speech synthesis ; a long (4 minutes max. on 4 channels) buffer size for the pre-event-delay using two 8 bit CMOS micro-processors. Events are identified by the event triggering algorithm. 100 Hz or 200 Hz samplings are used. On collecting data, the length of one sampling is compressed from 12 bit to 4 bit by ADPCM-IC and the compressed data are stored on digital tape. Records on the tape are synthesized by ADPCM-IC, or soft-ware on a mini-computer. By use of the ADPCM method, the total amount of data that can be put on a tape is practically increased fourfold. One cartridge tape (555-feet tape length) can store 72 MB of data when the data are synthesized. The time information is from a clock processor which can be adjusted at any time by a one minute pulse supplied from a precision clock or a 40 kHz standard time radio. Two field experiments showed the DOBSH worked correctly and proved its usefulness. | |||||
| 書誌情報 |
東京大學地震研究所彙報 = Bulletin of the Earthquake Research Institute, University of Tokyo 巻 60, 号 1, p. 23-37, 発行日 1985-09-05 |
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| ISSN | ||||||
| 収録物識別子タイプ | ISSN | |||||
| 収録物識別子 | 00408972 | |||||
| 書誌レコードID | ||||||
| 収録物識別子タイプ | NCID | |||||
| 収録物識別子 | AN00162258 | |||||
| フォーマット | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | application/pdf | |||||
| 日本十進分類法 | ||||||
| 主題Scheme | NDC | |||||
| 主題 | 453 | |||||
| 出版者 | ||||||
| 出版者 | 東京大学地震研究所 | |||||
| 出版者別名 | ||||||
| Earthquake Research Institute, University of Tokyo | ||||||
