Wavelet and subband transforms have been of great interest in the fields of engineering and applied mathematics. The theories of these powerful signal-processing tools have matured and many applications utilizing them are emerging in different disciplines. This book, comprising eleven chapter contributions from prominent researchers in the field, focuses on communications and multimedia applications of wavelet and subband transforms. The first six chapters of this book deal with a variety of communications applications that significantly benefit from wavelet and subband theories. Similarly, the remaining five chapters present the most recent advances in multimedia applications of wavelet and subband transforms. These chapters interconnect the requirements of applications with the underlying theory and their engineering solutions. Hence, the reader can easily trace the entire path from fundamentals to the purpose and merit of the application in hand. A combined list of references for the entire volume is given at the end of the text that should be helpful to the interested reader for further study. The book should be of particular interest to engineers and scientists who want to learn about state-of-the-art subband and wavelet transform applications as well as their theoretical underpinnings. It can also serve as a supplementary book for graduate-level engineering and applied mathematics courses on wavelet and subband transforms.