⁴The design of constructive, i.e., learning-free, procedures that map for instance a logic sp-form [6, 31] onto a corresponding topology and parameter set of an equivalent feedforward neural network is certainly possible, including a rough representation of propagation delay, but a full description would require a rather extensive introduction to the terminology of logic synthesis. That in turn would shift the emphasis of this thesis too much away from the time domain and frequency domain learning techniques.