Application of wavelets to the pre-processing of underwater sounds

Powell, K., Sapatinas, T., Bailey, T. and Krzanowski, W. (1995) Application of wavelets to the pre-processing of underwater sounds. Statistics and Computing, 5 (4). pp. 265-273. ISSN 0960-3174.

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In this paper we consider data on underwater sounds of differing types. Our objective is to filter background noise and achieve an acceptable level of reduction in the raw data, whilst at the same time maintaining the main features of the original signal. In particular, we consider data compression through the use of wavelet analysis followed by a thresholding of small coefficients in the resulting multiresolution decomposition. Various methods to threshold the wavelet representation are discussed and compared using recordings of dolphin sounds. An empirical modification to one of them is also proposed which shows promise in better preserving certain structures in our particular sound data.

Item Type: Article
Uncontrolled Keywords: Computer science
Subjects: Q Science > QA Mathematics
Divisions: pre Nov-2014 > Faculty of Education
Depositing User: Users 67 not found.
Date Deposited: 10 Aug 2011 15:09
Last Modified: 11 Dec 2014 12:46

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Last edited: 29/06/2016 12:23:00