An Application of ICA to Identify Vibratory Low-Level Signals Generated by Termites

An extended robust independent components analysis algorithm based on cumulants is applied to identify vibrational alarm signals generated by soldier termites (reticulitermes grassei) from background noise. A seismic accelerometer is employed to characterize acoustic emissions. To support the proposed technique, vibrational signals from a low cost microphone were masked by white uniform noise. Results confirm the validity of the method, taken as the basis for the development of a low cost, non-invasive, termite detection system.

[1]  Jean-Francois Cardoso,et al.  Blind signal separation: statistical principles , 1998, Proc. IEEE.

[2]  R. Mankin,et al.  Acoustic Detection of Termite Infestations in Urban Trees , 2002, Journal of economic entomology.

[3]  Noboru Ohnishi,et al.  Blind multiuser separation of instantaneous mixture algorithm based on geometrical concepts , 2002, Signal Process..

[4]  W. Kirchner,et al.  Vibrational alarm communication in the African fungus-growing termite genus Macrotermes (Isoptera, Termitidae) , 1999, Insectes Sociaux.

[5]  C. L. Nikias,et al.  Signal processing with higher-order spectra , 1993, IEEE Signal Processing Magazine.

[6]  Jerry M. Mendel,et al.  Tutorial on higher-order statistics (spectra) in signal processing and system theory: theoretical results and some applications , 1991, Proc. IEEE.

[7]  M. Hinich.  Detecting a transient signal by bispectral analysis , 1990 .

[8]  R. K. Mueller,et al.  Characteristics of acoustic emission signals generated by termite activity in wood , 1991, IEEE 1991 Ultrasonics Symposium,.

[9]  Zhi Ding,et al.  An algebraic principle for blind separation of white non-Gaussian sources , 1999, Signal Process..

[10]  Ali Mansour,et al.  Blind Separation of Sources using density estimation and simulated annealing , 2001 .

[11]  A. J. Bell,et al.  A Unifying Information-Theoretic Framework for Independent Component Analysis , 2000 .

[12]  C. Bordereau,et al.  Vibratory Alarm Signals in Two Sympatric Higher Termite Species: Pseudacanthotermes spiniger and P. militaris (Termitidae, Macrotermitinae) , 1999, Journal of Insect Behavior.