WAVELETS AND FILTER BANKS "At many US universities, math departments offer service courses in math for the engineers, and there is a periodic discussion of the curriculum. One difficulty is that the two sides speak different languages;-- in math, it is linear algebra, calculus...,- and in engineering, signals, high-pass/low-pass filters, downsampling / upsampling, filter bank, polyphase matrix... A wonderful feature of the Strang-Nguyen book is that it speaks both languages. In this way it is refreshing, and it stands out in a class of its own. It has been tested in courses for engineers, and stood the test. From what I hear, it is equally popular in the two cultures, math and engineering." ---From a review on amazon.com, Palle E.T. Jorgensen, Iowa City, Iowa