Wavelets

• pywavelet, some wavelet functions for Python
• mention of a wavelet package for Python
  
• Amara's Wavelet Page, a very good collection of links
• The Really Friendly Guide to Wavelets, by C. Valens, includes the numeric algorithms: Fast Lifting Wavelet Transform and Embedded Zerotree Wavelet (EZW) encoder
  
• Dr. Dobb's Wavelets page
• Wavelet Analysis, includes discussion of using an FFT to do wavelet transforms
  
• Wavelets and Signal Processing by Ian Kaplan
• The Numerical Recipes people have some Wavelets code on their public domain page. The description of this code can be found in the Numerical Recipes in C book which can be viewed here. These algorithms are for the Daubechies wavelets.
• A page on the Daubechies D4 wavelet transform (including C source code and a bit of sample test data) from Ian Kaplan. The Haar transform is discussed here. And the wavelet lifting scheme. And applying the Haar wavelet transform to time series information.
• The D4 wavelet examined through a Maple worksheet
• A lab on the Daubechies wavelet, including some example results and image processing.
• A paper called Wavelets for data smoothing, which uses the Daubechies wavelet
  
• Estimation of Differences in Event Arrival Times Through Wavelet Transform Techniques
• The JSci package has a number of wavelet routines.
• First and Higher Order Correlation Detection Using Wavelet Transforms, a paper on detecting correlation between signals
• CWT the Continuous Wavelet Transform
• The MIT OpenCourseWare Wavelet course
• imgSeek allows you to search photos by looking for ones with similar appearance (done via a wavelet transform)
  

Books

• Wavelet Methods for Time Series Analysis, Donald B. Percival and Andrew T. Walden, Cambridge University Press, 2000.
• A Wavelet Tour of Signal Processing, 2nd ed., Stephane Mallat, 1999, ISBN 0-12-466606-X.
• Discovering Wavelets, Edward Aboufadel, Steven Schlicker, 1999, ISBN: 0471331937
  
• Numerical Recipes in C also includes a section on wavelet transforms