{"created":"2024-02-13T04:23:25.887826+00:00","id":2000051,"links":{},"metadata":{"_buckets":{"deposit":"da9c3b57-206e-4237-9d7f-598926665d9b"},"_deposit":{"created_by":11,"id":"2000051","owner":"11","owners":[11],"pid":{"revision_id":0,"type":"depid","value":"2000051"},"status":"published"},"_oai":{"id":"oai:shobi-u.repo.nii.ac.jp:02000051","sets":["10:6:1707795258398"]},"author_link":["822"],"control_number":"2000051","item_10002_biblio_info_35":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2023-12-18","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"93","bibliographicPageStart":"69","bibliographicVolumeNumber":"36","bibliographic_titles":[{"bibliographic_title":"尚美学園大学芸術情報研究","bibliographic_titleLang":"ja"},{"bibliographic_title":"Journal of Informatics for Arts , Shobi University","bibliographic_titleLang":"en"}]}]},"item_10002_description_31":{"attribute_name":"記事種別(日)","attribute_value_mlt":[{"subitem_description":"研究ノート","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_10002_description_32":{"attribute_name":"記事種別(英)","attribute_value_mlt":[{"subitem_description":"Research Notes","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10002_description_33":{"attribute_name":"抄録(日)","attribute_value_mlt":[{"subitem_description":"MIDIカラオケなどの自動演奏データを作成する用途や、耳コピーの自動化や自動採譜の用途において、オーディオ信号をMIDI 形式に変換するツールの実現が要望される。近年、生成AI 技術が進歩しており、生成される音楽作品の品質を向上させるため、膨大な音楽作品により訓練する必要がある。既製のオーディオデータを変換して、機械学習向けのMIDIデータを提供する用途も考えられる。いずれの場合も、与えられたオーディオ信号をMIDI形式に変換する信号処理系の精度が要求され、それを左右するのが時間周波数解析である。しかし、低域部の周波数解析には次の２つの問題がある。低域部を忠実に解析しようとすると時間分解能が低下すること。もう１つは、低域の基音成分については音響信号に記録されず、音響解析では対応できない場合があること。本稿では、一般化調和解析手法に改良を加え、低域部の周波数解析精度を向上させ、欠落している基音成分を補間する機能を搭載させた、オーディオ-MIDI 変換ツールを開発したので、その結果を報告する。","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_10002_description_34":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"Realization of Audio-MIDI conversion tools are requested for creation of playback-control data such as for MIDI-Karaoke machines, and for development of an automatic music notation system. In these days, a Generative-AI technique is highly advanced. For increasing quality of music generation, we can also provide MIDI contents for machine learning by converting a large quantity of waveform- audio contents. In these applications, precisions of converted MIDI data from audio signals and time- frequency analysis play an important role. However, there are two kinds of problems on analysis of low-frequency components. One is difficult to increase resolution of frequency analysis without sacrificing temporal analysis resolution. The other is difficult to analyze missing fundamental components in recorded audio signals. In this paper, we propose an improved generalized harmonic analysis method, which can increase precision of low-frequency components and compensate predicted fundamental components in a time-frequency analysis. And we report applying our improved analysis method, to our developing audio-MIDI conversion tool.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_10002_identifier_registration":{"attribute_name":"ID登録","attribute_value_mlt":[{"subitem_identifier_reg_text":"10.57486/0002000051","subitem_identifier_reg_type":"JaLC"}]},"item_10002_publisher_36":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"尚美学園大学芸術情報学部・大学院芸術情報研究科","subitem_publisher_language":"ja"}]},"item_10002_source_id_25":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AA12312312","subitem_source_identifier_type":"NCID"}]},"item_10002_source_id_38":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"1882-5370","subitem_source_identifier_type":"PISSN"}]},"item_10002_text_28":{"attribute_name":"著者所属(日)","attribute_value_mlt":[{"subitem_text_language":"ja","subitem_text_value":"尚美学園大学芸術情報学部非常勤"}]},"item_10002_text_29":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Shobi University"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"茂出木, 敏雄","creatorNameLang":"ja"},{"creatorName":"モデギ, トシオ","creatorNameLang":"ja-Kana"},{"creatorName":"MODEGI,Toshio","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2024-02-28"}],"displaytype":"detail","filename":"geijutsukiyou36_05MODEGI.pdf","filesize":[{"value":"2.6 MB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"url":"https://shobi-u.repo.nii.ac.jp/record/2000051/files/geijutsukiyou36_05MODEGI.pdf"},"version_id":"b807e341-1039-4cd6-b937-ca5bea548919"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"自動採譜","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"オーディオ-MIDI 変換","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"低域部","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"一般化調和解析","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"ミッシング・フ ァンダメンタル","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"生成AI","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"automatic music notation","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"audio-MIDI conversion","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"low-frequency component","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"generalized harmonic analysis","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"missing fundamental","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"generative AI","subitem_subject_language":"en","subitem_subject_scheme":"Other"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"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":"低域部の周波数解析精度の改善とオーディオ-MIDI変換ツール開発への応用","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"低域部の周波数解析精度の改善とオーディオ-MIDI変換ツール開発への応用","subitem_title_language":"ja"},{"subitem_title":"Improvement of Frequency-Analysis Precision for Low-frequency Components and Application to Development of Audio-MIDI Conversion Tool","subitem_title_language":"en"}]},"item_type_id":"10002","owner":"11","path":["1707795258398"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2024-02-28"},"publish_date":"2024-02-28","publish_status":"0","recid":"2000051","relation_version_is_last":true,"title":["低域部の周波数解析精度の改善とオーディオ-MIDI変換ツール開発への応用"],"weko_creator_id":"11","weko_shared_id":-1},"updated":"2024-03-01T06:27:01.441042+00:00"}