ORTHONORMAL MRA WAVELETS: SPECTRAL FORMULAS AND ALGORITHMS
F. Gómez-Cubillo, Z. Suchanecki, S. Villullas · International Journal of Wavelets Multiresolution and Information Processing · 2011
Spectral decompositions of translation and dilation operators are built in terms of suitable orthonormal bases of L2(ℝ), leading to spectral formulas for scaling functions and orthonormal wavelets associated with multiresolution analysis (MRA). The spectral formulas are useful to compute compactly supported scaling functions and wavelets. It is illustrated with a particular choice of the orthonormal bases, the so-called Haar bases, which yield a new algorithm related to the infinite product matrix representation of Daubechies and Lagarias.