👉 The term "semidifference" is used in the context of signal processing and linear filtering to describe a difference between two input signals, where one of them represents an initial condition or value, while the other one represents a final result or output. It can be thought of as the difference between two successive points on a continuous-time signal. For example, if you have two signals A(t) and B(t), where A(t) is the initial condition (the value at time t=0)
