{"created":"2023-06-20T15:05:57.241218+00:00","id":35328,"links":{},"metadata":{"_buckets":{"deposit":"51ec24c8-081f-4353-a14a-ab272eb49afb"},"_deposit":{"created_by":1,"id":"35328","owners":[1],"pid":{"revision_id":0,"type":"depid","value":"35328"},"status":"published"},"_oai":{"id":"oai:jaxa.repo.nii.ac.jp:00035328","sets":["1887:1890","1896:1898:1899:1993"]},"author_link":["421682","421681"],"item_9_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"1930-07","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"62","bibliographicPageEnd":"247","bibliographicPageStart":"231","bibliographicVolumeNumber":"5","bibliographic_titles":[{"bibliographic_title":"東京帝國大學航空研究所報告"},{"bibliographic_title":"Report of Aeronautical Research Institute, Tokyo Imperial University","bibliographic_titleLang":"en"}]}]},"item_9_description_17":{"attribute_name":"抄録（英）","attribute_value_mlt":[{"subitem_description":"Acoustical properties of two parabolic reflectors (dia. 2m., depth 46 and 35cm.) and two exponential horns (opening dia. 84 and 35cm., length 300 and 100cm. respectively) were investigated. The experimental method was entirely of electric, i. e., the directive property and magnifying power for sounds of various wave-lengths were determined by the aid of a microphone and amplifier, and for parabolic reflectors the distribution of the sound intensity along the axis was also measured. It is found that the parabolic reflector has excellent directive property, though the magnifying power is not large. On the other hand, single horn was found to be almost nondirective for sounds of lower frequencies, so that whichever method, aural or electrical reception, may be used the time difference or phase difference at two horns should be utilized in order to employ the horn for the aircraft sound locator.","subitem_description_type":"Other"}]},"item_9_description_32":{"attribute_name":"資料番号","attribute_value_mlt":[{"subitem_description":"資料番号: SA4146503000","subitem_description_type":"Other"}]},"item_9_publisher_8":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"東京帝國大學航空研究所"}]},"item_9_publisher_9":{"attribute_name":"出版者（英）","attribute_value_mlt":[{"subitem_publisher":"Aeronautical Research Institute, Tokyo Imperial University"}]},"item_9_source_id_24":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AA00387631","subitem_source_identifier_type":"NCID"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"OBATA, Juichi","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"421681","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"YOSIDA, Yahei","creatorNameLang":"en"}],"nameIdentifiers":[{"nameIdentifier":"421682","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2020-01-24"}],"displaytype":"detail","filename":"SA4146503.pdf","filesize":[{"value":"1.3 MB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"SA4146503.pdf","url":"https://jaxa.repo.nii.ac.jp/record/35328/files/SA4146503.pdf"},"version_id":"f2234c52-0935-4dad-9dc9-c13ba8edddd3"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"eng"}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourcetype":"departmental bulletin paper","resourceuri":"http://purl.org/coar/resource_type/c_6501"}]},"item_title":"Acoustical Properties of Some Sound Collectors for the Aircraft Sound Locator.","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"Acoustical Properties of Some Sound Collectors for the Aircraft Sound Locator.","subitem_title_language":"en"}]},"item_type_id":"9","owner":"1","path":["1890","1993"],"pubdate":{"attribute_name":"公開日","attribute_value":"2015-03-26"},"publish_date":"2015-03-26","publish_status":"0","recid":"35328","relation_version_is_last":true,"title":["Acoustical Properties of Some Sound Collectors for the Aircraft Sound Locator."],"weko_creator_id":"1","weko_shared_id":-1},"updated":"2023-06-20T23:21:55.170330+00:00"}