{"created":"2023-05-15T08:20:16.546871+00:00","id":206,"links":{},"metadata":{"_buckets":{"deposit":"9de9c51c-009b-4f51-aaf8-29c557085b00"},"_deposit":{"created_by":3,"id":"206","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"206"},"status":"published"},"_oai":{"id":"oai:shobi-u.repo.nii.ac.jp:00000206","sets":["10:1:38"]},"author_link":["337","338","339"],"control_number":"206","item_3_biblio_info_12":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2003-03-31","bibliographicIssueDateType":"Issued"},"bibliographicPageEnd":"11","bibliographicPageStart":"1","bibliographicVolumeNumber":"2","bibliographic_titles":[{"bibliographic_title":"尚美学園大学芸術情報学部紀要","bibliographic_titleLang":"ja"},{"bibliographic_title":"Bulletin of the Faculty of Informatics for Arts, Shobi University","bibliographic_titleLang":"en"}]}]},"item_3_description_10":{"attribute_name":"抄録(日)","attribute_value_mlt":[{"subitem_description":"ITU-Tの8 kbit/s音声符号化方式G.729の演算量削減版がAnnex Aとして勧告された経緯とのアルゴリズムの特徴、及び、品質評価について述べる。Annex Aは、電話網上でモデムを介して、PC等の端末装置間でディジタルデータと音声とを同時に送受する方式DSVD (Digital Simultaneous Voice and Data)のITU-T勧告V.70に使われることを主目的として、G.729の演算量削減により開発された。DSVD用音声符号化式は、低ビットレート、商用電話品質、短遅延時間、低演算量が望まれ、また、伝送効率の要請からVAD(voice Activity Detection)機能の併用が必須である。G.729 CS-ACELPは、演算量を除いてほぼすべて要求を満たしていたが、Annex Aは演算量を大幅に削減し、DSVDの要求に合致させたものである。品質評価は、日本語ほか複数国語で行われ、G.729本体とAnnex Aが相互に接続可能であり、かつ、所定の品質条件を満たすことが明らかとなった。DSVD方式はその後、インターネット上のバケット音声通信にとって代わられるが、音声符号化標準は広くVoIP(Voice over Internet Protocol)などに使用されその用途が拡大している。","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_3_description_11":{"attribute_name":"抄録(英)","attribute_value_mlt":[{"subitem_description":"This paper presents the history of recommending Annex A to G.729 in ITU-T (international Telecommunication Union, Telecommunication Standerdization Sector) and quality assessment of the coder. The requirements for this system were toll speech quality, low complexity, and short delay time at low bit-rate less than 12 kbit/s, and were not met by existing speech coding standards. Rreduced complexity CS-ACELP was selected from among 5 candidates as the coding algorithm after extensive subjective selection tests and was recommended as Annex A to G.729. The subjective test in Japanese shows that this Annex is compatible with G.729 and meets all the requirements.","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_3_description_15":{"attribute_name":"表示順","attribute_value_mlt":[{"subitem_description":"3","subitem_description_type":"Other"}]},"item_3_description_16":{"attribute_name":"アクセション番号","attribute_value_mlt":[{"subitem_description":"KJ00002411914","subitem_description_type":"Other"}]},"item_3_description_8":{"attribute_name":"記事種別(日)","attribute_value_mlt":[{"subitem_description":"論文","subitem_description_language":"ja","subitem_description_type":"Other"}]},"item_3_description_9":{"attribute_name":"記事種別(英)","attribute_value_mlt":[{"subitem_description":"Article","subitem_description_language":"en","subitem_description_type":"Other"}]},"item_3_publisher_22":{"attribute_name":"出版社","attribute_value_mlt":[{"subitem_publisher":"尚美学園大学芸術情報学部","subitem_publisher_language":"ja"}]},"item_3_source_id_1":{"attribute_name":"雑誌書誌ID","attribute_value_mlt":[{"subitem_source_identifier":"AA11624171","subitem_source_identifier_type":"NCID"}]},"item_3_source_id_19":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"13471023","subitem_source_identifier_type":"PISSN"}]},"item_3_text_6":{"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情報表現学科"},{"subitem_text_language":"ja","subitem_text_value":"NTT研究所東京都武蔵野市"},{"subitem_text_language":"ja","subitem_text_value":"NTT研究所東京都武蔵野市"}]},"item_3_text_7":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_language":"en","subitem_text_value":"Shobi University"},{"subitem_text_language":"en","subitem_text_value":"NTT Laboratories"},{"subitem_text_language":"en","subitem_text_value":"NTT Laboratories"}]},"item_3_title_3":{"attribute_name":"論文名よみ","attribute_value_mlt":[{"subitem_title":"8 kbit/s オンセイ フゴウカ ITU-T ヒョウジュン ノ エンザンリョウ サクゲンバン Annex A カンコク ノ ケイイ ト ヒンシツ ヒョウカ ジョウホウ ヒョウゲン ガッカ","subitem_title_language":"ja-Kana"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"林, 伸二","creatorNameLang":"ja"},{"creatorName":"ハヤシ, シンジ","creatorNameLang":"ja-Kana"},{"creatorName":"HAYASHI, Shinji","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"片岡, 章俊","creatorNameLang":"ja"},{"creatorName":"カタオカ, アキトシ","creatorNameLang":"ja-Kana"},{"creatorName":"KATAOKA, Akitoshi","creatorNameLang":"en"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"栗原, 祥子","creatorNameLang":"ja"},{"creatorName":"クリハラ, サチコ","creatorNameLang":"ja-Kana"},{"creatorName":"KURIHARA, Sachiko","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":"2017-04-21"}],"displaytype":"detail","filename":"KJ00002411914.pdf","filesize":[{"value":"769.3 kB"}],"format":"application/pdf","licensetype":"license_11","mimetype":"application/pdf","url":{"label":"KJ00002411914.pdf","url":"https://shobi-u.repo.nii.ac.jp/record/206/files/KJ00002411914.pdf"},"version_id":"14a7e112-3e5f-490e-8739-f441776dd576"}]},"item_keyword":{"attribute_name":"キーワード","attribute_value_mlt":[{"subitem_subject":"V.70 DSVD","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"V.34 MODEM","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"G.729 CS-ACELP","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"中低レート音声符号化方式","subitem_subject_language":"ja","subitem_subject_scheme":"Other"},{"subitem_subject":"V.70 DSVD","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"V.34 MODEM","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"G.729 CS-ACELP","subitem_subject_language":"en","subitem_subject_scheme":"Other"},{"subitem_subject":"Middle and Low Bit-Rate Speech Coding","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":"8 kbit/s 音声符号化ITU-T標準の演算量削減版 (Annex A)勧告の経緯と品質評価(情報表現学科)","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"8 kbit/s 音声符号化ITU-T標準の演算量削減版 (Annex A)勧告の経緯と品質評価(情報表現学科)","subitem_title_language":"ja"},{"subitem_title":"History of standardizing complexty-reduction algorithm (Annex A) to 8-kbit/s G.729 in ITU-T and its Quality Assessment(Department of Information Expression)","subitem_title_language":"en"}]},"item_type_id":"3","owner":"3","path":["38"],"pubdate":{"attribute_name":"PubDate","attribute_value":"2017-04-21"},"publish_date":"2017-04-21","publish_status":"0","recid":"206","relation_version_is_last":true,"title":["8 kbit/s 音声符号化ITU-T標準の演算量削減版 (Annex A)勧告の経緯と品質評価(情報表現学科)"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-10-20T00:41:31.197557+00:00"}