Title :
Performance of cepstrum-based deconvolution for DOA estimation in the presence of room reverberation
Author :
Nagase, R. ; Oishi, K. ; Furukawa, T.
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 an unknown 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 by the multiple signal classification (MUSIC) procedure. Computer simulations demonstrate the superiority of our cepstral prefiltering approach.
Keywords :
deconvolution; direction-of-arrival estimation; filtering theory; reverberation; signal classification; time-frequency analysis; transient response; DOA estimation; MPC; MUSIC; RIR; cepstral prefiltering approach; cepstrum-based deconvolution; direction-of-arrival estimator; glottal component; minimum-phase component; multiple signal classification; room impulse response; signal sequence; time-frequency room dereverberation method; unknown voiced speech signal; vocal-tract component; Cepstrum; Direction-of-arrival estimation; Estimation; Microphones; Reverberation; Signal to noise ratio; Speech;
Conference_Titel :
Consumer Electronics (GCCE), 2014 IEEE 3rd Global Conference on
Conference_Location :
Tokyo
DOI :
10.1109/GCCE.2014.7031207
