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Kepstrum analysis and real-time application to noise cancellation

Jeong, J. (2009) Kepstrum analysis and real-time application to noise cancellation. In: Proceedings of The 8th Wseas International Conference On Recent Advances In Signal Processing, Robotics and Automation. Mathematics and Computers in Science and Engineering . World Scientific And Engineering Acad And Soc, Athens, Grece, pp. 149-154. ISBN 978-960-474-054-3

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This paper provides analysis of kepstrum (known elsewhere as complex cepstrum) and its real-time application to noise cancellation. The method uses kepstrum estimation for identification of the ratio of acoustic path transfer functions between two microphones and efficient processing technique for real-time processing. It is applied to the front-end of speech enhancement method, the Griffiths and Jim beamformer. The experiments are processed in real-time by software implementation in LabVIEW. It will be shown that the front-end kepstrum approach effectively cancels echoes and hence reverberation in a noisy environment. For a real-time application, the computational complexity on kepstrum processing has also been investigated and compared with NLMS algorithm of adaptive filter.

Item Type:Book Section
Additional Information:ISBN: 978-960-474-054-3; 8th WSEAS International Conference on Signal Processing, Robotics and Automation, Cambridge, England, Feb 21-23, 2009
Uncontrolled Keywords:kepstrum, cepstrum, complex cepstrum, system identification, NLMS, beamformer
Subjects:Q Science > Q Science (General)
R Medicine > R Medicine (General)
Divisions:?? FBSK ??
ID Code:12915
Deposited By: Liza Porijo
Deposited On:07 Jul 2011 04:33
Last Modified:07 Jul 2011 04:33

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