강의/Signals and Systems1 1. Signals, System Properties Signal: A function of one or more variables Unit Impulse: \( \delta[n] = (n == 0)? 1: 0 \) Unit Step: \( u[n] = (n >= 0)? 1 : 0 \) \( \delta[n] = u[n] - u[n - 1] \) \( u[n] = \sum_{k = 0}^\infty \delta[n - k] \) System: A process by which input signals are transformed to output signals \( x[n] \) -> Discrete-Time System -> \( y[n] \) \( x(t) \) -> Continuous-Time System -> \( y(t) \) A system is.. 2022. 7. 21. 이전 1 다음