Title :
A cepstrum prefiltering approach for DOA estimation of speech signal in reverberant environments
Author :
Nagase, Ryo ; Oishi, Kazuaki ; Furukawa, Toshihiro
Author_Institution :
Dept. of Manage. Sci., Tokyo Univ. of Sci., Tokyo, Japan
Abstract :
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 vocaltract 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.
Keywords :
direction-of-arrival estimation; filtering theory; signal classification; speech processing; time-frequency analysis; DOA estimation; MPC; MUSIC procedure; cepstrum prefiltering approach; direction-of-arrival estimator; liftered sequence; minimum-phase component; multiple signal classification procedure; reverberant environments; room impulse response; speech signal; time-frequency dereverberation method; Abstracts; Direction-of-arrival estimation; Educational institutions; Speech; Direction-of-arrival (DOA); cepstral analysis; cepstral prefiltering; multiple signal classification (MUSIC) algorithm; time-delay estimation (TDE);
Conference_Titel :
Signal Processing Conference (EUSIPCO), 2013 Proceedings of the 21st European
Conference_Location :
Marrakech
