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Browse Journals & Magazines > Acoustics, Speech and Signal ...> Volume:38 Issue:7 Help

The complex cepstrum and bicepstrum: analytic performance evaluation in the presence of Gaussian noise

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2 Author(s)
Petropulu, A.P. ; Dept. of Electr. & Comput. Eng., Northeastern Univ., Boston, MA, USA ; Nikias, C.L.

An analytic performance evaluation of the complex cepstrum, power cepstrum, bicepstrum, and power bicepstrum is presented by providing approximate expressions of the bias and variance of the cepstrum parameters due to the presence of Gaussian noise. The approximations are based on the asymptotic properties of bispectrum estimates, and they are valid for moderate signal-to-noise ratios (SNRs). The assumed model consists of a deterministic signal (e.g. multiple echoes) in additive white Gaussian noise and finite length data. The validity of the analytic expressions is verified with Monte Carlo simulations. Performance comparisons between bicepstrum and cepstrum methods suggest that the improved performance of the bicepstrum is a function of SNR, A(ω), M, and N

Published in:
Acoustics, Speech and Signal Processing, IEEE Transactions on  (Volume:38 ,  Issue: 7 )

Date of Publication: Jul 1990

Page(s):
1246 - 1256
ISSN :
0096-3518
INSPEC Accession Number:
3758622
Digital Object Identifier :
10.1109/29.57553
Product Type:
Journals & Magazines
Date of Current Version :
06 August 2002
Issue Date :
Jul 1990
Sponsored by :
IEEE Signal Processing Society

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