{"created":"2023-07-25T10:25:25.539173+00:00","id":3778,"links":{},"metadata":{"_buckets":{"deposit":"490e6b31-ed81-47cb-b0ac-d2db132b359e"},"_deposit":{"created_by":4,"id":"3778","owners":[4],"pid":{"revision_id":0,"type":"depid","value":"3778"},"status":"published"},"_oai":{"id":"oai:naist.repo.nii.ac.jp:00003778","sets":["34:35"]},"author_link":["6094","6095","6096","6097","6098"],"item_7_alternative_title_1":{"attribute_name":"その他のタイトル","attribute_value_mlt":[{"subitem_alternative_title":"Efficient Representation of Short-Time Phase Based on Time-Domain Smoothed Group Delay","subitem_alternative_title_language":"en"}]},"item_7_biblio_info_9":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2001-04","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"4","bibliographicPageEnd":"628","bibliographicPageStart":"621","bibliographicVolumeNumber":"J84-D-II","bibliographic_titles":[{"bibliographic_title":"電子情報通信学会論文誌D-II","bibliographic_titleLang":"ja"}]}]},"item_7_description_7":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"音声の短時間位相を効率的に表現する方法を提案する.本論文では, 音声の群遅延を逆フーリエ変換したものを適当な次数で打ち切った時間領域平滑化群遅延(TSGD)を用いることにより, 短時間位相を表現することを試みる.セグメンタルSNRによる実験を行った結果, TSGDの100次以下に波形の形状に関する情報が集中していることがわかった.また, 主観評価実験により, TSGDの次数を30次程度とした場合に, 原音とほとんど区別のつかない高品質な音声が合成されることが示され, 提案手法により短時間位相を効率的に表現できることが示された.また, 提案手法を用いれば, これまで分析合成方式で問題になっていた有声無声判定の誤りによる劣化も抑えられるため, 音声符号化や声質変換などの応用に有効であると考えられる.","subitem_description_language":"ja","subitem_description_type":"Abstract"}]},"item_7_publisher_10":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"電子情報通信学会","subitem_publisher_language":"ja"}]},"item_7_rights_11":{"attribute_name":"出版者URL","attribute_value_mlt":[{"subitem_rights":"http://ci.nii.ac.jp/naid/110003184120"}]},"item_7_rights_18":{"attribute_name":"権利","attribute_value_mlt":[{"subitem_rights":"Copyright (C) 2001 電子情報通信学会.","subitem_rights_language":"ja"}]},"item_7_source_id_12":{"attribute_name":"ISSN","attribute_value_mlt":[{"subitem_source_identifier":"0915-1923","subitem_source_identifier_type":"ISSN"}]},"item_7_source_id_14":{"attribute_name":"書誌レコードID","attribute_value_mlt":[{"subitem_source_identifier":"AN1007132X","subitem_source_identifier_type":"NCID"}]},"item_7_version_type_20":{"attribute_name":"著者版フラグ","attribute_value_mlt":[{"subitem_version_resource":"http://purl.org/coar/version/c_970fb48d4fbd8a85","subitem_version_type":"VoR"}]},"item_access_right":{"attribute_name":"アクセス権","attribute_value_mlt":[{"subitem_access_right":"open access","subitem_access_right_uri":"http://purl.org/coar/access_right/c_abf2"}]},"item_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"坂野, 秀樹","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"6094","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"陸, 金林","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"6095","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"中村, 哲","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"6096","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"鹿野, 清宏","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"6097","nameIdentifierScheme":"WEKO"}]},{"creatorNames":[{"creatorName":"河原, 英紀","creatorNameLang":"ja"}],"nameIdentifiers":[{"nameIdentifier":"6098","nameIdentifierScheme":"WEKO"}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2023-03-02"}],"displaytype":"detail","filename":"IEICEDII_JD84II_4_621.pdf","filesize":[{"value":"4.9 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