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Fourier and Wavelets Transforms Cintia Bertacchi Uvo http://www.mathworks.com/access/helpdesk/help/pdf_doc/wavele t/wavelet_ug.pdf Amara Graps (1995)
Fourier Analysis
Frequency analysis Linear operator
Idea: Transforms time-based signals to frequency-based signals.
Lund University / LTH / Dept. Water Res. Eng./ Cintia Bertacchi Uvo Any periodic function can be decomposed to a sum of sine and cosine waves, i.e.: any periodic function f(x) can be represented by