フルテキストファイル
著者
Nakanishi Isao Faculty of Regional Sciences, Tottori University 鳥取大学研究者総覧 KAKEN研究者をさがす
Nagata Yudai Faculty of Engineering, Tottori University
Asakura Takenori Faculty of Engineering, Tottori University
Itoh Yoshio Faculty of Engineering, Tottori University 鳥取大学研究者総覧 KAKEN研究者をさがす
Fukui Yutaka Faculty of Engineering, Tottori University KAKEN研究者をさがす
キーワード
speech processing
noise reduction
adaptive line enhancer
frequency domain
decorrelation parameter
modified DFT pair
window function
NDC分類
5類 技術・工学・工業
抄録
The speech noise reduction system based on the frequency domain adaptive line enhancer using a windowed modified DFT (MDFT) pair is presented. The adaptive line enhancer (ALE) is effective for extracting sinusoidal signals blurred by a broadband noise. In addition, it utilizes only one microphone. Therefore, it is suitable for the realization of speech noise reduction in portable electronic devices. In the ALE, an input signal is generated by delaying a desired signal using the decorrelation parameter, which makes the noise in the input signal decorrelated with that in the desired one. In the present paper, we propose to set decorrelation parameters in the frequency domain and adjust them to optimal values according to the relationship between speech and noise. Such frequency domain decorrelation parameters enable the reduction of the computational complexity of the proposed system. Also, we introduce the window function into MDFT for suppressing spectral leakage. The performance of the proposed noise reduction system is examined through computer simulations.
出版者
電子情報通信学会 = Institute of Electronics, Information and Communications Engineers (IEICE)
資料タイプ
学術雑誌論文
外部リンク
ISSN・ISBN
0916-8508
書誌ID
AA10826239
掲載誌名
IEICE transactions on fundamentals of electronics, communications and computer sciences
最新掲載誌名
IEICE transactions on fundamentals of electronics, communications and computer sciences
E89-A
4
開始ページ
950
終了ページ
959
発行日
2006-04-01
出版者DOI
著者版フラグ
出版社版
著作権表記
copyright©2006 IEICE
掲載情報
IEICE transactions on fundamentals of electronics, communications and computer sciences. 2006, E89-A(4), 950-959
部局名
工学部・工学研究科
言語
英語