TY - GEN
T1 - Detection of abnormal sound using multi-stage GMM for surveillance microphone
AU - Ito, Akinori
AU - Aiba, Akihito
AU - Ito, Masashi
AU - Makino, Shozo
PY - 2009
Y1 - 2009
N2 - We developed a system that detects abnormal sound from sound signal observed by a surveillance microphone. Our system learns the "normal sound" from observation of the microphone, and then detects sounds never observed before as "abnormal sounds." To this end, we developed a technique that uses multiple GMMs for modeling different levels of sound events efficiently. We also consider how to determine thresholds of GMM switching and event detection. As a result, we obtained almost same detection performance using the percentile method to the manually optimized GMMs. Besides, we exploited the segment-based feature, which gave the best result among all methods.
AB - We developed a system that detects abnormal sound from sound signal observed by a surveillance microphone. Our system learns the "normal sound" from observation of the microphone, and then detects sounds never observed before as "abnormal sounds." To this end, we developed a technique that uses multiple GMMs for modeling different levels of sound events efficiently. We also consider how to determine thresholds of GMM switching and event detection. As a result, we obtained almost same detection performance using the percentile method to the manually optimized GMMs. Besides, we exploited the segment-based feature, which gave the best result among all methods.
UR - http://www.scopus.com/inward/record.url?scp=74049143834&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=74049143834&partnerID=8YFLogxK
U2 - 10.1109/IAS.2009.160
DO - 10.1109/IAS.2009.160
M3 - Conference contribution
AN - SCOPUS:74049143834
SN - 9780769537443
T3 - 5th International Conference on Information Assurance and Security, IAS 2009
SP - 733
EP - 736
BT - 5th International Conference on Information Assurance and Security, IAS 2009
T2 - 5th International Conference on Information Assurance and Security, IAS 2009
Y2 - 18 August 2009 through 20 September 2009
ER -