{"id":232539,"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00232539","sets":["1164:5159:11541:11549"]},"path":["11549"],"owner":"44499","recid":"232539","title":["ピッチシフトおよびソフトクリッピングによるヴィオラからチェロへの音色変換"],"pubdate":{"attribute_name":"公開日","attribute_value":"2024-02-22"},"_buckets":{"deposit":"d040989e-ba5f-429f-a3ec-2753e93462d5"},"_deposit":{"id":"232539","pid":{"type":"depid","value":"232539","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"ピッチシフトおよびソフトクリッピングによるヴィオラからチェロへの音色変換","author_link":["629656","629659","629658","629657"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"ピッチシフトおよびソフトクリッピングによるヴィオラからチェロへの音色変換"},{"subitem_title":"Cello-like Sound Synthesis from Viola Recordings Using Pitch Shifting and Harmonic Generation","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"EA3","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2024-02-22","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"北海道大学大学院情報科学院"},{"subitem_text_value":"北海道大学大学院情報科学研究院 "}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Hokkaido University Graduate school of Information science and technology","subitem_text_language":"en"},{"subitem_text_value":"Hokkaido University Faculty of Information science and technology ","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/232539/files/IPSJ-SLP24151069.pdf","label":"IPSJ-SLP24151069.pdf"},"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-SLP24151069.pdf","filesize":[{"value":"2.4 MB"}],"mimetype":"application/pdf","priceinfo":[{"tax":["include_tax"],"price":"0","billingrole":"22"},{"tax":["include_tax"],"price":"0","billingrole":"44"}],"accessrole":"open_login","version_id":"8891331e-64aa-451c-ae48-136230fb5870","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2024 by the Institute of Electronics, Information and Communication Engineers This SIG report is only available to those in membership of the SIG."}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"吉野, 夏樹"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"田中, 章"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Natsuki, Yoshino","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"Akira, Tanaka","creatorNameLang":"en"}],"nameIdentifiers":[{}]}]},"item_4_source_id_9":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN10442647","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_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2188-8663","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"本稿ではヴィオラの録音信号からチェロに類似した音響信号を合成する手法を提案する．多くのヴァイオリン奏者はヴィオラの演奏技術も有するため，この手法により弦楽四重奏の録音をヴァイオリン奏者 1 人で行えるようになることが期待できる．ヴィオラとチェロは同じヴァイオリン属の擦弦楽器であり，たがいにオクターブの関係であることから，ヴィオラの録音信号の音高を 1 オクターブ下げることでチェロに近い波形を得る．ピッチシフトを行う際に発生する問題が二つある．1 つ目はピッチシフトに使用するアルゴリズム，2 つ目はナイキスト周波数の半分以上の周波数成分の生成である．本稿では Sines-Transients-Noise 分離を取り入れたピッチシフトアルゴリズムを使用したのち，倍音付加により高周波数成分を生成する手法を提案する．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"In this paper, we propose a method to synthesize a cello-like acoustic signal from a viola recording signal. Many violinists will be able to record string ensembles such as string quartets by themselves because many violinists can also play the viola. Since violas and cellos are bowed string instruments in the violin family and have an octave relationship with each other, a waveform similar to that of the cello can be obtained by lowering the pitch of the viola recording signal by one octave. Two problems occur when performing pitch shifting. The first is an algorithm used for pitch shifting, and the second is the generation of frequency components that are higher than half the Nyquist frequency. In this paper, we use a pitch shift algorithm that incorporates Sines-Transients-Noise decomposition and then propose a method that generates high-frequency components by adding overtones.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"6","bibliographic_titles":[{"bibliographic_title":"研究報告音声言語情報処理（SLP）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2024-02-22","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"69","bibliographicVolumeNumber":"2024-SLP-151"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"updated":"2025-01-19T10:24:51.740938+00:00","created":"2025-01-19T01:33:27.941034+00:00","links":{}}