{"id":91841,"updated":"2025-01-21T15:16:32.143812+00:00","links":{},"created":"2025-01-18T23:40:59.504902+00:00","metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00091841","sets":["1164:5064:7126:7159"]},"path":["7159"],"owner":"11","recid":"91841","title":["圧縮やダウンサンプリングがクロマベクトルと和音認識に与える影響について"],"pubdate":{"attribute_name":"公開日","attribute_value":"2013-05-04"},"_buckets":{"deposit":"191b2290-03da-4213-be91-0478ff200a08"},"_deposit":{"id":"91841","pid":{"type":"depid","value":"91841","revision_id":0},"owners":[11],"status":"published","created_by":11},"item_title":"圧縮やダウンサンプリングがクロマベクトルと和音認識に与える影響について","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"圧縮やダウンサンプリングがクロマベクトルと和音認識に与える影響について"},{"subitem_title":"Effects of Audio Compression and Downsampling for Chroma Vector and Chord Recognition","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"ポスターセッション","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2013-05-04","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"早稲田大学大学院基幹理工学研究科"},{"subitem_text_value":"早稲田大学大学院基幹理工学研究科"},{"subitem_text_value":"早稲田大学大学院基幹理工学研究科"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Graduate School of Fundamental Science and Engineering, Waseda University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Fundamental Science and Engineering, Waseda University","subitem_text_language":"en"},{"subitem_text_value":"Graduate School of Fundamental Science and Engineering, Waseda University","subitem_text_language":"en"}]},"item_language":{"attribute_name":"言語","attribute_value_mlt":[{"subitem_language":"jpn"}]},"item_publisher":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"情報処理学会","subitem_publisher_language":"ja"}]},"publish_status":"0","weko_shared_id":-1,"item_file_price":{"attribute_name":"Billing file","attribute_type":"file","attribute_value_mlt":[{"url":{"url":"https://ipsj.ixsq.nii.ac.jp/record/91841/files/IPSJ-MUS13099046.pdf"},"date":[{"dateType":"Available","dateValue":"2015-05-04"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-MUS13099046.pdf","filesize":[{"value":"632.5 kB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"660","billingrole":"5"},{"tax":["include_tax"],"price":"330","billingrole":"6"},{"tax":["include_tax"],"price":"0","billingrole":"21"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_date","version_id":"ecea744e-6624-491d-9779-18c7ee7073a7","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2013 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"植村, あい子"},{"creatorName":"石倉, 和将"},{"creatorName":"甲藤, 二郎"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Aiko, Uemura","creatorNameLang":"en"},{"creatorName":"Kazumasa, Ishikura","creatorNameLang":"en"},{"creatorName":"Jiro, Katto","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10438388","subitem_source_identifier_type":"NCID"}]},"item_4_textarea_12":{"attribute_name":"Notice","attribute_value_mlt":[{"subitem_textarea_value":"SIG Technical Reports are nonrefereed and hence may later appear in any journals, conferences, symposia, etc."}]},"item_resource_type":{"attribute_name":"資源タイプ","attribute_value_mlt":[{"resourceuri":"http://purl.org/coar/resource_type/c_18gh","resourcetype":"technical report"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"本研究は，音楽情報処理で使用される特徴量クロマベクトルとそれを用いた和音認識について，楽曲の周波数特性の変化の影響を調査する．ダウンサンプリングや圧縮後のデータは周波数特性が変化していることから，音楽要素の認識やコンテンツベースな情報検索の結果に影響を及ぼすことが懸念される．そこで本稿では，ビットレートやサンプリングレートの異なる楽曲に関し，クロマベクトルの解析を行い，その品質について和音認識用データセットを用いて評価を行った．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"Feature analysis of music encoded with different bit rates and sampling rates is necessary to achieve high accuracy in musical content recognition and content-based music information retrieval (MIR). Bit rate and sampling frequency differences are expected to adversely affect musical content analysis and content-based MIR results because the frequency response might be changed by the encoding. In this paper, we specifically examine its effect on the chroma vector, which is a commonly used feature vector for music signal processing. We analyze chroma vectors extracted from encoded music files with different bit rates and compare them with chroma features of original songs obtained using datasets for chord recognition.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"4","bibliographic_titles":[{"bibliographic_title":"研究報告音楽情報科学（MUS）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2013-05-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"46","bibliographicVolumeNumber":"2013-MUS-99"}]},"relation_version_is_last":true,"weko_creator_id":"11"}}