Phase response is the relationship between the phase (waves) of a sinusoid l input and the output signal (information theory) passing through any device which accepts input and produces an output signal such as an amplifier or a filter (signal processing) Amplifiers, filters and other devices are often categorized by their amplitude and/or phase response. The amplitude response is the ratio of output amplitude to input, usually a function of the frequency. Similarly, phase response is the phase of the output with the input as reference. The input is defined as zero phase. A phase response is not limited to lying between 0° and 360°, as phase can accumulate to any amount of time.

See also

* Group delay and phase delay Category:Trigonometry Category:Wave mechanics Category:Signal processing de:Phasengang pl:Charakterystyka fazowa ru:Фазо-частотная характеристика sv:Fasgång uk:Фазо-частотна характеристика