Offers a well-rounded, mathematical approach to problems in signal interpretation using the latest time, frequency, and mixed-domain methods* Equally useful as a reference, an up-to-date review, a learning tool, and a resource for signal analysis techniques* Provides a gradual introduction to the mathematics so that the less mathematically adept reader will not be overwhelmed with instant hard analysis* Covers Hilbert spaces, complex analysis, distributions, random signals, analog Fourier transforms, and more.