{"id":56437,"metadata":{"_oai":{"id":"oai:ipsj.ixsq.nii.ac.jp:00056437","sets":["1164:5064:5131:5136"]},"path":["5136"],"owner":"1","recid":"56437","title":["IFスペクトログラム：音声信号の時間周波数表現の一手法"],"pubdate":{"attribute_name":"公開日","attribute_value":"1997-02-20"},"_buckets":{"deposit":"98afcb11-2a1b-4216-abad-94e103506bce"},"_deposit":{"id":"56437","pid":{"type":"depid","value":"56437","revision_id":0},"owners":[1],"status":"published","created_by":1},"item_title":"IFスペクトログラム：音声信号の時間周波数表現の一手法","author_link":["0","0"],"item_titles":{"attribute_name":"タイトル","attribute_value_mlt":[{"subitem_title":"IFスペクトログラム：音声信号の時間周波数表現の一手法"},{"subitem_title":"THE IF SPECTROGRAM : AN APPROACH FOR TIME - FREQUENCY REPRESENTATION OF SPEECH","subitem_title_language":"en"}]},"item_type_id":"4","publish_date":"1997-02-20","item_4_text_3":{"attribute_name":"著者所属","attribute_value_mlt":[{"subitem_text_value":"東京工業大学精密工学研究所"},{"subitem_text_value":"東京工業大学精密工学研究所"},{"subitem_text_value":"東京工業大学精密工学研究所"}]},"item_4_text_4":{"attribute_name":"著者所属(英)","attribute_value_mlt":[{"subitem_text_value":"Precision and Intelligence Laboratory, Tokyo Institute of Technology","subitem_text_language":"en"},{"subitem_text_value":"Precision and Intelligence Laboratory, Tokyo Institute of Technology","subitem_text_language":"en"},{"subitem_text_value":"Precision and Intelligence Laboratory, Tokyo Institute of 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/56437/files/IPSJ-MUS96019015.pdf"},"date":[{"dateType":"Available","dateValue":"1999-02-20"}],"format":"application/pdf","billing":["billing_file"],"filename":"IPSJ-MUS96019015.pdf","filesize":[{"value":"655.8 kB"}],"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":"ff733452-b929-4f3e-bb8e-480c4c691444","displaytype":"detail","licensetype":"license_note","license_note":"Copyright (c) 1997 by the Information Processing Society of Japan"}]},"item_4_creator_5":{"attribute_name":"著者名","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"阿部, 敏彦"},{"creatorName":"小林, 隆夫"},{"creatorName":"今井, 聖"}],"nameIdentifiers":[{}]}]},"item_4_creator_6":{"attribute_name":"著者名(英)","attribute_type":"creator","attribute_value_mlt":[{"creatorNames":[{"creatorName":"Toshihiko, Abe","creatorNameLang":"en"},{"creatorName":"Takao, Kobayashi","creatorNameLang":"en"},{"creatorName":"Satoshi, Imai","creatorNameLang":"en"}],"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_description_7":{"attribute_name":"論文抄録","attribute_value_mlt":[{"subitem_description":"本論文では音声の時間?周波数表現の一手法として，IF(nstantaneous　frequenc)スペクトログラムを提案する，IFスペクトログラムは従来の時間?周波数表現である短時間フーリエ変換(TF)などに比べて，音声など準周期的信号の倍音構造を明確に表すものである。IFスペクトログラム上では倍音成分は非常に鋭いピークを持ち，倍音構造を明確に見ることができる．さらに，IFスペクトログラムに時間軸伸縮を導入する．その目的は，倍音周波数の急激な変化が引き起こす，スペクトログラム上での倍音成分どうしが重なり合ってしまうという現象が起きないようにすることである．フレームごとに倍音周波数の時間変化に従い時間軸伸縮を適用することにより，さらに明確な倍音構造を得ることが可能となる．","subitem_description_type":"Other"}]},"item_4_description_8":{"attribute_name":"論文抄録(英)","attribute_value_mlt":[{"subitem_description":"We propose a new spectral representation, the instantaneous frequency (IF) spectrogram, which more clearly shows the harmonic structure of quasi-periodic signals such as speech than conventional time-frequency (TF) representations such as the short time Fourier transform (STFT) spectrograms. In the IF spectrogram, harmonic components have very sharp spectral peaks and the harmonic structure is clearly seen. Next, we incorporate time-warping into the IF spectrogram to avoid overlapping of the harmonics in the spectrogram, that is caused by rapid change of the harmonic frequencies. The time-warping is applied to the signal frame by frame according to the change of the harmonic frequencies. As a result, we can obtain a spectrogram which shows sharp harmonic structures.","subitem_description_type":"Other"}]},"item_4_biblio_info_10":{"attribute_name":"書誌情報","attribute_value_mlt":[{"bibliographicPageEnd":"88","bibliographic_titles":[{"bibliographic_title":"情報処理学会研究報告音楽情報科学（MUS）"}],"bibliographicPageStart":"83","bibliographicIssueDates":{"bibliographicIssueDate":"1997-02-20","bibliographicIssueDateType":"Issued"},"bibliographicIssueNumber":"18(1996-MUS-019)","bibliographicVolumeNumber":"1997"}]},"relation_version_is_last":true,"weko_creator_id":"1"},"updated":"2025-01-22T04:58:46.512890+00:00","created":"2025-01-18T23:19:51.507223+00:00","links":{}}