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Phase distortion

From Wikipedia, the free encyclopedia

In signal processing, phase distortion or phase-frequency distortion is distortion, that is, change in the shape of the waveform, that occurs when (a) a filter's phase response is not linear over the frequency range of interest, that is, the phase shift introduced by a circuit or device is not directly proportional to frequency, or (b) the zero-frequency intercept of the phase-frequency characteristic is not 0 or an integral multiple of 2π radians.

Audibility of phase distortion


Grossly changed phase relationships, without changing amplitudes, can be audible but the degree of audibility of the type of phase shifts expected from typical sound systems remains debated.[1][2][3]

See also



  1. ^ Arthur C Ludwig Sr. (1997). "Audibility of Phase Distortion". Retrieved 15 February 2016.
  2. ^ Lipshitz, Stanley P.; Pocock, Mark; Vanderkooy, John (1 September 1982). "On the Audibility of Midrange Phase Distortion in Audio Systems". Journal of the Audio Engineering Society. 30 (9): 580–595.
  3. ^ "Human Hearing - Phase Distortion Audibility".

Public Domain This article incorporates public domain material from Federal Standard 1037C. General Services Administration. Archived from the original on 2022-01-22. (in support of MIL-STD-188).