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<blockquote data-quote="Langston Holland" data-source="post: 41409" data-attributes="member: 171">Re: What is the audible effect of 180 polarity change between HF and mids?Good point, though I&#039;d like to offer an explanation more in keeping with the train of thought of my post. My poor wording &quot;indicating increasingly later arrivals of the high frequencies relative to the low&quot; should have read &quot;indicating increasingly later arrivals of the beginning of the high frequency waveforms relative to the beginning of the low frequency waveforms&quot;.<a href="http://www.excelsior-audio.com/Publications/Phase/Phase1.html" target="_blank">An illustration that uses a square wave for reference</a>:&quot;If phase distortion is introduced by a system with non-ideal phase response, all of the harmonics are no longer in phase with the fundamental. In other words, at the fundamentals positive going zero crossing some of the harmonics will no longer be at their positive going zero crossing. As an example, given a 1 kHz square wave, if there is -90 degrees of phase shift at 5 kHz (relative to 1 kHz) then the 5th harmonic that makes up the square wave will have a minima, not a positive going zero crossing, at the reference point in the cycle of the fundamental.&quot;</blockquote>

[QUOTE="Langston Holland, post: 41409, member: 171"] Re: What is the audible effect of 180 polarity change between HF and mids? Good point, though I'd like to offer an explanation more in keeping with the train of thought of my post. My poor wording "indicating increasingly later arrivals of the high frequencies relative to the low" should have read "indicating increasingly later arrivals of the beginning of the high frequency waveforms relative to the beginning of the low frequency waveforms". [url=http://www.excelsior-audio.com/Publications/Phase/Phase1.html]An illustration that uses a square wave for reference[/url]: [i]"If phase distortion is introduced by a system with non-ideal phase response, all of the harmonics are no longer in phase with the fundamental. In other words, at the fundamentals positive going zero crossing some of the harmonics will no longer be at their positive going zero crossing. As an example, given a 1 kHz square wave, if there is -90 degrees of phase shift at 5 kHz (relative to 1 kHz) then the 5th harmonic that makes up the square wave will have a minima, not a positive going zero crossing, at the reference point in the cycle of the fundamental."[/i] [/QUOTE]

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