{"created":"2023-07-27T06:24:46.762949+00:00","id":7825,"links":{},"metadata":{"_buckets":{"deposit":"d1e7ea3d-7fa4-4908-a63a-e964233023a4"},"_deposit":{"created_by":3,"id":"7825","owners":[3],"pid":{"revision_id":0,"type":"depid","value":"7825"},"status":"published"},"_oai":{"id":"oai:kanazawa-u.repo.nii.ac.jp:00007825","sets":["934:935:936"]},"author_link":["10663","353","377","10665","10664"],"item_8_biblio_info_8":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicIssueDates":{"bibliographicIssueDate":"2008-11-01","bibliographicIssueDateType":"Issued"},"bibliographicPageStart":"A6-3","bibliographic_titles":[{"bibliographic_title":"第23回信号処理シンポジュウム（金沢)"}]}]},"item_8_description_21":{"attribute_name":"抄録","attribute_value_mlt":[{"subitem_description":"This paper proposes a new stereo echo canceller with pre-processing units in both channels. Periodic delays with di erent phases by the two pre-processing units provides an additional condition for echo cancellation, leading to faster convergence. Signal sliding in both channels guarantees symmetrical shift of a sound image around the original position for better subjective quality of the pre-processed signal. Simulation results show that the convergence speed of the proposed echo canceller is 20% faster than that of the conventional echo canceller. Subjective test results show that the proposed echo canceller achieved a 0.37 point higher grading difference in the ITU-R five-grade impairment scale than the conventional echo canceller with a statistically significant di erence. 前処理ユニットを両チャネルに有する構成のステレオエコーキャンセラを提案する．2 つの前処理ユニットは，チャネル毎の遅延挿入を異なる位相で行うことで新たな エコー消去の条件をつくり，収束を高速化する．また，両 チャネルの信号を周期的に遅延させることで，音像が前 処理を行う前の位置を中心に移動するため，前処理した 信号の音質が優れている．シミュレーションによって，提 案するエコーキャンセラは，従来のエコーキャンセラより も，20%高速に収束することを示す．また，主観評価結果を用いて，提案するエコーキャンセラにおけるITU-R 5 段階劣化率の評価差分値が，統計的に有意な差で，従来のエコーキャンセラより0.37 ポイント高くなることを示す．","subitem_description_type":"Abstract"}]},"item_8_description_5":{"attribute_name":"提供者所属","attribute_value_mlt":[{"subitem_description":"金沢大学理工研究域　電子情報学系","subitem_description_type":"Other"}]},"item_8_publisher_17":{"attribute_name":"出版者","attribute_value_mlt":[{"subitem_publisher":"IEICE 電子情報通信学会 / 信号処理研究専門委員会 / 第23回 信号処理シンポジウム"}]},"item_8_relation_28":{"attribute_name":"関連URI","attribute_value_mlt":[{"subitem_relation_type_id":{"subitem_relation_type_id_text":"http://www.ieice.org/~sip/symp/2008/","subitem_relation_type_select":"URI"}}]},"item_8_version_type_25":{"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_creator":{"attribute_name":"著者","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"水野, 裕介"},{"creatorName":"ナカヤマ, ケンジ","creatorNameLang":"ja-Kana"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"カズダフリ, ロラン"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"杉山, 昭彦"}],"nameIdentifiers":[{}]},{"creatorNames":[{"creatorName":"平野, 晃宏"}],"nameIdentifiers":[{},{},{}]},{"creatorNames":[{"creatorName":"中山, 謙二"}],"nameIdentifiers":[{},{},{}]}]},"item_files":{"attribute_name":"ファイル情報","attribute_type":"file","attribute_value_mlt":[{"accessrole":"open_date","date":[{"dateType":"Available","dateValue":"2017-10-03"}],"displaytype":"detail","filename":"TE-PR-NAKAYAMA-K-A63.pdf","filesize":[{"value":"492.3 kB"}],"format":"application/pdf","licensetype":"license_note","mimetype":"application/pdf","url":{"label":"TE-PR-NAKAYAMA-K-A63.pdf","url":"https://kanazawa-u.repo.nii.ac.jp/record/7825/files/TE-PR-NAKAYAMA-K-A63.pdf"},"version_id":"693b55a5-2c25-4a7a-bf4b-d00bdd991462"}]},"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":"conference paper","resourceuri":"http://purl.org/coar/resource_type/c_5794"}]},"item_title":"両チャンネルに前処理ユニットを有するステレオエコーキャンセラ","item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"両チャンネルに前処理ユニットを有するステレオエコーキャンセラ"},{"subitem_title":"Stereo Echo Canceller with Pre-Processing Units in Both Channels","subitem_title_language":"en"}]},"item_type_id":"8","owner":"3","path":["936"],"pubdate":{"attribute_name":"公開日","attribute_value":"2017-10-03"},"publish_date":"2017-10-03","publish_status":"0","recid":"7825","relation_version_is_last":true,"title":["両チャンネルに前処理ユニットを有するステレオエコーキャンセラ"],"weko_creator_id":"3","weko_shared_id":-1},"updated":"2023-07-28T02:19:04.248795+00:00"}