In this survey paper, some of the basic properties of multiwavelets are reviewed. Particular emphasis is given to approximation-theoretic issues and sampling on compact intervals. In addition, a translation invariant multiwavelet transform is discussed and the regularity and approximation order of the associated correlation matrices, which satisfy a particular matrix-valued refinement equation,...

For communication applications where secure speech signal transmissions are a key requirement, scrambler is taken into consideration. To prevent someone from listening in on private conversations without their knowledge, it can transform clear that unintelligible. The proposed scrambling system involves using two types of frequency transformation techniques: multiwavelet and Arnold transform. e...