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Browsing by Subject "time-frequency analysis"

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    Item type:Article, Access status: Open Access ,
    Analiza czasowo-częstotliwościowa akustycznych obrazów falowych za pomocą transformaty falkowej
    (Wydawnictwa AGH, 2005) Wawrzyniak-Guz, Kamila
    Interpretation of acoustic full waveforms is based on identification of elastic waves recorded in boreholes. Determination of arrival time and duration of wave packets can be solved using time-frequency analyses such a wavelet transform. Discrete and continuous wavelet transform were applied to decomposition of wave field. Research showed that discrete wavelet transform is not a proper tool to solving the problem. However, it allows denoising signals. Research on continuous wavelet transform, which has better resolution, are carried out and gives a chance to decompose wave field into separate waves.