Discrete-time and continuous time signals, convolution. Fourier series. Fourier and Laplace transforms. Discrete Fourier and Z-transforms. Linear, time-invariant systems: impulse response, system function. State-space representation and realization of system functions. Frequency response of linear time invariant systems, Bode plots. Application to filter analysis and design. (Prerequisite: EENG223/INFE211; MATH252 strongly recommended)