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Discretewavelet transform based shift-invariant analysis scheme for transient sound signals

Ahmad, W, Kondoz, AM and Hacihabiboǧluy, H (2010) Discretewavelet transform based shift-invariant analysis scheme for transient sound signals 13th International Conference on Digital Audio Effects, DAFx 2010 Proceedings.

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Abstract

Discrete wavelet transform (DWT) has gained widespread recognition and popularity in signal processing due to its ability to underline and represent time-varying spectral properties of many transient and other nonstationary signals. However, DWT is a shift-variant transform. This shift-variance is a major problem with the use of DWT for transient signal analysis and pattern recognition applications. A number of modified forms of DWT have been investigated in recent years that provide approximate shift-invariant transform but at the cost of increased redundancy and complexity. In this paper, a shift-invariant analysis scheme is proposed which is non-redundant. This scheme combines minimum-phase (MP) reconstruction with the DWT so that the resultant scheme provides a shift-invariant transform. The detailed properties of MP signal and different methods to reconstruct it are explained. The proposed scheme can be used for the analysis-synthesis, classification, and compression of transient sound signals.

Item Type: Article
Authors :
NameEmailORCID
Ahmad, WUNSPECIFIEDUNSPECIFIED
Kondoz, AMa.kondoz@surrey.ac.ukUNSPECIFIED
Hacihabiboǧluy, HUNSPECIFIEDUNSPECIFIED
Date : 2010
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:41
Last Modified : 17 May 2017 15:05
URI: http://epubs.surrey.ac.uk/id/eprint/836333

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