{"links":{},"id":238204,"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00238204","sets":["1164:5064:11558:11743"]},"path":["11743"],"owner":"44499","recid":"238204","title":["線形予測に基づくロスレス音声コーデックSRLAの圧縮率改善"],"pubdate":{"attribute_name":"公開日","attribute_value":"2024-08-19"},"_buckets":{"deposit":"38f94c60-9325-44d1-b2d0-8fe24c694501"},"_deposit":{"id":"238204","pid":{"type":"depid","value":"238204","revision_id":0},"owners":[44499],"status":"published","created_by":44499},"item_title":"線形予測に基づくロスレス音声コーデックSRLAの圧縮率改善","author_link":["652119","652118"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"線形予測に基づくロスレス音声コーデックSRLAの圧縮率改善"},{"subitem_title":"Improving Compression Rate of Lossless Audio Codec SRLA","subitem_title_language":"en"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"音声・音響処理2","subitem_subject_scheme":"Other"}]},"item_type_id":"4","publish_date":"2024-08-19","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"電気通信大学大学院情報理工学研究科情報学専攻"},{"subitem_text_value":"電気通信大学大学院情報理工学研究科情報学専攻"}]},"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/238204/files/IPSJ-MUS24141010.pdf","label":"IPSJ-MUS24141010.pdf"},"date":[{"dateType":"Available","dateValue":"2026-08-19"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-MUS24141010.pdf","filesize":[{"value":"1.6 MB"}],"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":"6b551e00-90da-4681-97f5-4a9a5126df4f","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 2024 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"峰尾, 太陽"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"庄野, 逸"}],"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_source_id_11":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"2188-8752","subitem_source_identifier_type":"ISSN"}]},"item_4_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"ロスレス音声コーデック SRLA (Svr-fiR Lossless Audio) は，単純な構成でありながら最新のコーデックと比較して遜色ない圧縮率とデコード速度を示している．本研究では，SRLA の圧縮率改善を目的として手法提案を行う．主な改善点は，音声フレーム分割を可変としていること，および，線形予測符号化 (Linear predictive coding，LPC) の予測次数を増やしたことである．実楽曲データを用いた性能比較の結果，上記の提案により圧縮率が改善した．また，既存コーデックよりも優れた圧縮率とデコード速度を示し，TAK (Tom's lossless Audio Kompressor) に迫る圧縮率とデコード速度を示すことを確かめた．提案手法は LPC を用いた一般のロスレス音声コーデックにも適用可能である．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"The lossless audio codec SRLA (Svr-fiR Lossless Audio) has a simple structure through shows comparable compression ratio and decoding speed to latest codecs. In this study, we propose a method improving the compression ratio of SRLA. There are two proposals in this paper; variable audio frame segmentation and an increase in the number of prediction orders for linear predictive coding (LPC). The above proposals shows compression rate improvement through performance comparisons using real music data. The compression ratio and decoding speed of the proposed method are superior to those of existing codecs, and are close to those of TAK (Tom's lossless Audio Kompressor). The proposed method is applicable to general lossless audio codecs using LPC.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"8","bibliographic_titles":[{"bibliographic_title":"研究報告音楽情報科学（MUS）"}],"bibliographicPageStart":"1","bibliographicIssueDates":{"bibliographicIssueDate":"2024-08-19","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"10","bibliographicVolumeNumber":"2024-MUS-141"}]},"relation_version_is_last":true,"weko_creator_id":"44499"},"created":"2025-01-19T01:41:17.587672+00:00","updated":"2025-01-19T08:39:52.796476+00:00"}