TY - GEN
T1 - Near-common zeros in blind identification of simo acoustic systems
AU - Naylor, Patrick A.
AU - Lin, Xiang
AU - Khong, Andy W.H.
PY - 2008
Y1 - 2008
N2 - The common zeros problem for Blind System Identification (BSI) has been well known to degrade the performance of classic BSI algorithms and therefore limits performance of subsequent speech dereverberation. Recently, we have shown that multichannel systems cannot be well identified if near-common zeros are present. In this work, we further study the near-common zeros problem using channel diversity measure. We then investigate the use of forced spectral diversity (FSD) based on a combination of spectral shaping filters and effective channel undermodelling. Simulation results show the effectiveness of the proposed approach.
AB - The common zeros problem for Blind System Identification (BSI) has been well known to degrade the performance of classic BSI algorithms and therefore limits performance of subsequent speech dereverberation. Recently, we have shown that multichannel systems cannot be well identified if near-common zeros are present. In this work, we further study the near-common zeros problem using channel diversity measure. We then investigate the use of forced spectral diversity (FSD) based on a combination of spectral shaping filters and effective channel undermodelling. Simulation results show the effectiveness of the proposed approach.
KW - Blind system identification
KW - Channel identifiability condition
KW - Forced spectral diversity
KW - Near-common zeros
UR - http://www.scopus.com/inward/record.url?scp=50449092369&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50449092369&partnerID=8YFLogxK
U2 - 10.1109/HSCMA.2008.4538678
DO - 10.1109/HSCMA.2008.4538678
M3 - Conference contribution
AN - SCOPUS:50449092369
SN - 9781424423385
T3 - 2008 Hands-free Speech Communication and Microphone Arrays, Proceedings, HSCMA 2008
SP - 21
EP - 24
BT - 2008 Hands-free Speech Communication and Microphone Arrays, Proceedings, HSCMA 2008
T2 - 2008 Hands-free Speech Communication and Microphone Arrays, HSCMA 2008
Y2 - 6 May 2008 through 8 May 2008
ER -