TY - GEN
T1 - Joint estimation of DOA and speech based on EM beamforming
AU - Kim, Lae Hoon
AU - Hasegawa-Johnson, Mark
AU - Potamianos, Gerasimos
AU - Libal, Vit
PY - 2010
Y1 - 2010
N2 - In this paper, we propose a multi-microphone joint optimal estimation of the direction of arrival (DOA) and the source speech signal through newly introduced EM beamforming. This produces a posterior PDF for the DOA, based only on the reliable speech spectrum. By maximizing over the posterior PDF of the DOA, we achieve maximum a posteriori DOA estimation. After convergence, the estimated source spectrum through weighted sum in the Bayesian sense is a maximum likelihood estimate (MLE). This is a sufficient statistic for minimum mean square error (MMSE) optimal estimation using a subsequent single channel MMSE filter.
AB - In this paper, we propose a multi-microphone joint optimal estimation of the direction of arrival (DOA) and the source speech signal through newly introduced EM beamforming. This produces a posterior PDF for the DOA, based only on the reliable speech spectrum. By maximizing over the posterior PDF of the DOA, we achieve maximum a posteriori DOA estimation. After convergence, the estimated source spectrum through weighted sum in the Bayesian sense is a maximum likelihood estimate (MLE). This is a sufficient statistic for minimum mean square error (MMSE) optimal estimation using a subsequent single channel MMSE filter.
KW - Bayesian beamforming
KW - Direction of arrival
KW - EM beamforming
KW - Multi-microphone
KW - Optimal speech enhancement
UR - http://www.scopus.com/inward/record.url?scp=78049412640&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=78049412640&partnerID=8YFLogxK
U2 - 10.1109/ICASSP.2010.5496144
DO - 10.1109/ICASSP.2010.5496144
M3 - Conference contribution
AN - SCOPUS:78049412640
SN - 9781424442966
T3 - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings
SP - 121
EP - 124
BT - 2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2010 IEEE International Conference on Acoustics, Speech, and Signal Processing, ICASSP 2010
Y2 - 14 March 2010 through 19 March 2010
ER -