オオイシ　クニオ   大石　邦夫    所属   コンピュータサイエンス学部 コンピュータサイエンス学科    職種   教授
言語種別	英語
発行・発表の年月	2013/09
形態種別	国際会議論文
査読	査読あり
標題	A cepstrum prefiltering approach for DOA estimation of speech signal in reverberant environments
執筆形態	共著
掲載誌名	Proc. European Signal Processing Conference (EUSIPCO2013)
巻・号・頁	pp.1-5
著者・共著者	Ryudo Nagase, Kunio Oishi, and Toshihiro Furukawa
概要	A time-quefrency dereverberation method for reducing the minimum-phase component (MPC) of the room impulse response (RIR) is presented. This paper shows that the vocal-tract and glottal components and the MPC of the RIR can be eliminated from observed signals convolving the unknown RIR with an unknown voiced speech signal. The liftered sequence is applied to direction-of-arrival (DOA) estimator with the multiple signal classification (MUSIC) procedure. Computer simulations demonstrate the superiority of the our cepstral prefiltering approach.