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 Post subject: Comb filtering
PostPosted: October 25th, 2020, 6:33 pm 
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Joined: January 15th, 2015, 7:19 am
Posts: 1697
Location: Baltimore MD
I thought this was pretty good
Skip the first 6 mins.
I am going to change the way I measure systems because of this
https://youtu.be/VHjdh-Vka-g


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 Post subject: Re: Comb filtering
PostPosted: October 25th, 2020, 10:24 pm 
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Joined: July 17th, 2016, 6:24 am
Posts: 1099
Interesting but not convincing. In the stereo, polarity difference effects the sound staging, not the tone or timber.


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 Post subject: Re: Comb filtering
PostPosted: October 26th, 2020, 7:16 pm 
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Joined: February 28th, 2013, 3:31 pm
Posts: 1780
I didn't watch the video but comb filtering refers to interference patterns caused by any sound sources, whether generators or reflectors that cause enhancements and cancellations to a propagated sound due to distances between them. The term "comb" refers to the amplitude response changes as the receptor moves to different positions between the sources. Those amplitude variations repeat in a fashion so that the amplitude response plot looks like the fingers of a hair comb. As you move along the "fingers" of the comb, the intensities change.

Here is what it looks like:
Attachment:
Comb filtering.png
Comb filtering.png [ 34.91 KiB | Viewed 3892 times ]


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