Pink Noise
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=141525
Printed Date: April 29, 2024 at 3:00 AM
Topic: Pink Noise
Posted By: allthedbz
Subject: Pink Noise
Date Posted: July 20, 2016 at 10:19 PM
What is the difference between correlated and uncorrelated pink noise?
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I Learn Every Day
Replies:
Posted By: tonanzith
Date Posted: July 21, 2016 at 2:35 PM
Stereo pink noise is 'uncorrelated'. Therefore it is not associated with the pink noise on the other channel. This minimizes problems with standing waves, etc. Mono pink noise does not share this attribute. This is easy to test. Play stereo pink noise and try to set your time alignment. You can't. The reason is that the left and right speakers must have a similar signal for us to compare the distance between them based on time differences. We will place the soundstage using SPL with stereo pink noise. Mono pink noise has the same signal through both speakers at the same time so we can compare the time differences between the two sources. Therefore, we can hear the soundstage moving across the vehicle with mono pink noise while changing the TA settings on our processors. Basically we set frequency response using uncorrelated (stereo) pink noise. We set time alignment by ear using correlated (mono) pink noise. (bold emphasis mine)
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Gary Sather
Posted By: allthedbz
Date Posted: July 21, 2016 at 7:20 PM
Thank you for the reply! Very helpful.
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I Learn Every Day
Posted By: allthedbz
Date Posted: July 21, 2016 at 7:24 PM
Sorry, I forgot to ask but seeing as how this question pertains to the same topic. In what order is it best to set frequency and time alignment. I would assume it best in that order, or rather would it be better to set the time alignment first?
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I Learn Every Day
Posted By: tonanzith
Date Posted: July 21, 2016 at 7:36 PM
Personal preference but I do time alignment last.
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Gary Sather
Posted By: allthedbz
Date Posted: July 21, 2016 at 7:45 PM
i think i would do the same. thanks again
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I Learn Every Day
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