Analog and Digital Electronics

Frequency response is the measure of any system's output spectrum in response to an input signal. In the audible range it is usually referred to in connection with electronic amplifiers microphones and loudspeakers. Radio spectrum frequency response can refer to measurements of coaxial cables category cables video switchers and wireless communications devices.the impulse is described depends on whether the system is modeled in discrete or continuous time. The impulse can be modeled as a Dirac delta function for continuous-time systems or as the Kronecker delta for discrete-time systems.