• DocumentCode
    86640
  • Title

    An Analytic Wavelet Transform With a Flexible Time-Frequency Covering

  • Author

    Bayram, Ilker

  • Author_Institution
    Electron. & Commun. Eng., Istanbul Tech. Univ., Istanbul, Turkey
  • Volume
    61
  • Issue
    5
  • fYear
    2013
  • fDate
    1-Mar-13
  • Firstpage
    1131
  • Lastpage
    1142
  • Abstract
    We develop a rational-dilation wavelet transform for which the dilation factor, the Q-factor and the redundancy can be easily specified. The introduced transform contains Hilbert transform pairs of atoms, therefore it is also suitable for oscillatory signal processing. The transform may be modified to obtain a tight chirplet frame for discrete-time signals. A fast implementation, that makes use of an equivalent filter bank, makes the transform suitable for long signals. Examples on natural signals are provided to demonstrate the utility of the transform.
  • Keywords
    Hilbert transforms; Q-factor; channel bank filters; discrete time filters; signal processing; time-frequency analysis; wavelet transforms; Hilbert transform; Q-factor; analytic rational-dilation wavelet transform; dilation factor; discrete-time signal; equivalent filter bank; flexible time-frequency covering; oscillatory signal processing; redundancy; tight chirplet frame; Atomic clocks; Q factor; Redundancy; Time frequency analysis; Wavelet analysis; Wavelet transforms; Analytic wavelet frame; chirplet; pitch-shifting; rational dilation; rational sampling factor;
  • fLanguage
    English
  • Journal_Title
    Signal Processing, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1053-587X
  • Type

    jour

  • DOI
    10.1109/TSP.2012.2232655
  • Filename
    6375849