• DocumentCode
    872438
  • Title

    Attenuation Estimation From Correlated Sequences

  • Author

    Medkour, Tarek ; Walden, Andrew T.

  • Author_Institution
    Dept. of Math., Imperial Coll. London
  • Volume
    55
  • Issue
    1
  • fYear
    2007
  • Firstpage
    378
  • Lastpage
    383
  • Abstract
    We calculate the frequency-dependent variance of the log spectral ratio for correlated time series. This is used to produce a weighted least-squares approach to attenuation estimation, with weights calculated from estimated coherence. Applications to synthetic and real data illustrate that, for correlated series, the method improves significantly on traditional unweighted least-squares attenuation estimates
  • Keywords
    acoustic signal processing; least squares approximations; time series; coherence estimation; correlated time series; frequency-dependent variance; log spectral ratio; sequence correlation; weighted least-squares attenuation estimation; Aerodynamics; Attenuation; Back; Bayesian methods; Biomedical imaging; Data analysis; Frequency estimation; Image segmentation; Interpolation; Noise reduction; Attenuation; coherence; correlation; spectral ratios;
  • fLanguage
    English
  • Journal_Title
    Signal Processing, IEEE Transactions on
  • Publisher
    ieee
  • ISSN
    1053-587X
  • Type

    jour

  • DOI
    10.1109/TSP.2006.885682
  • Filename
    4034195
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=872438