Information Technology Journal1812-56381812-5646Asian Network for Scientific Information10.3923/itj.2006.494.502NadhimAhmed Muthana M.3200653The aim of this study was to investigate the use of wavelet bases in multitone or multi-frequency perspective to replace the traditional fourier bases that suffers from high spectral overlap and poor stop-band attenuation. This introduction or tutorial is very useful for multitone modulation in communication systems and other applications where, the bandwidth requirements are quite strict. Wavelet analysis appeared in many pure and applied areas of science and engineering where they are developed independently in the fields of mathematics, quantum physics, electrical engineering and seismic geology. Therefore, wavelet theory generally is a unified framework that led to many new applications such as multiresolution analysis used in computer vision, subband coding developed for speech and image compression and time-frequency localization provided for analyzing non-stationary signals.]]>Cohen, A. and J. Kovacevic,1996Daubechies, I.,1990Hess-Nielsen, N. and M.V. Wickerhauser,1996Malvar, H.S. and D.H. Staelin,1989Malvar, H.S.,1992Peled, A. and S. Winograd,1978Portnoff, M.R.,1980Princen, J.P. and A.B. Bradley,1986De Queiroz, R.L., T.Q. Nguyen and K.R. Rao,1996Scheuermann, H. and H. Gockler,1981Wong, K.M.,1997