Phase distortion

From Wikipedia, the free encyclopedia
Jump to: navigation, search

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[edit]

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[edit]

References[edit]

  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". JAES (http://www.aes.org/e-lib/browse.cfm?elib=3824) 30 (9): 580–595. 
  3. ^ "Human Hearing - Phase Distortion Audibility". 

 This article incorporates public domain material from the General Services Administration document "Federal Standard 1037C" (in support of MIL-STD-188).