Newsgroups: comp.dsp Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!cec2!news From: abed@saturn.wustl.edu (Abed M. Hammoud) Subject: Re: Wavelet Transforms? Message-ID: <1991Jun14.210016.28567@cec1.wustl.edu> Organization: Washington University, ESSRL References: <6654@qip.UUCP> Date: Fri, 14 Jun 91 21:00:16 GMT In article <6654@qip.UUCP> john@anasaz.uucp (John Moore) writes: >Can anyone post a summary of the concept of wavelet transforms? I have >read that these are the "hot new thing." > >In an attempt to solicit information, let me guess what they are. That >way, if you know but are too lazy to answer my first request, you >will be sorely tempted to set me straight:-) > >I would guess that they are a form of the general Fourier transform. >By this, I do not mean the traditional transform, but rather a class >of transforms characterized by the use of orthogonal functions - by this >definition a LaPlace (sp?) transform and a Walsh transform is also a >Fourier transform. With wavelets, presumably someone found a nifty >set of orthogonal, spanning functions that resemble solitons or >sinx/x functions or something else that is new and marvelous. > >Well, am I close? Am I all wet? Please don't send arcane references, as >I am quite a distance from a good library. > >Thanks (I hope). I would also be interested in reading something about wavelets transform.... thanks, abed@saturn.wustl.edu