https://wiki.tachyony.co.uk/w/api.php?action=feedcontributions&feedformat=atom&user=31.149.116.205Wikipedia - User contributions [en]2026-07-08T11:05:49ZUser contributionsMediaWiki 1.44.0https://wiki.tachyony.co.uk/w/index.php?title=Phase_distortion&diff=43708Phase distortion2024-09-21T17:30:38Z<p>31.149.116.205: </p>
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<div>{{Short description|Nonlinear phase response to filters}}<br />
{{for|the method of sound synthesis|Phase distortion synthesis}}<br />
{{Use American English|date = March 2019}}<br />
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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 (waves)|phase shift]] introduced by a [[electrical network|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.<br />
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==Audibility of phase distortion==<br />
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.<ref>{{cite web |author1=Arthur C Ludwig Sr. |title=Audibility of Phase Distortion |url=http://www.silcom.com/~aludwig/Phase_audibility.htm |access-date=15 February 2016 |date=1997}}</ref><ref>{{cite journal |author1=Lipshitz, Stanley P. |author2=Pocock, Mark |author3=Vanderkooy, John |title=On the Audibility of Midrange Phase Distortion in Audio Systems |journal=[[Journal of the Audio Engineering Society]] |date=1 September 1982 |volume=30 |issue=9 |pages=580–595 |url=http://www.aes.org/e-lib/browse.cfm?elib=3824}}</ref><ref>{{cite web |title=Human Hearing - Phase Distortion Audibility |url=http://www.audioholics.com/room-acoustics/human-hearing-phase-distortion-audibility-part-2}}</ref><br />
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==See also== <br />
*[[Audio system measurements]]<br />
*[[Phase noise]]<br />
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==References==<br />
{{Reflist}}<br />
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{{Noise}}<br />
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[[Category:Electrical parameters]]<br />
[[Category:Audio amplifier specifications]]<br />
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