Response to Kenny Gioia's video concerning stereo synthesis of mono source material

[@elementor85]

I do not know exactly what's the point of creating this video.

[@googlesucks1376]

To visually represent what Kenny was talking about. For decades, we've use Lissajous patterns for seeing the phase angle between left and right channels. It was important in the days of vinyl mastering since significant out-of-phase audio in the lower part of the spectrum would result in the cutting head lifting out of the groove - causing skips. This happened to the first Led Zep album. See Larry Bodin's book "Basic Disk Mastering" where he shows the Lissajous patterns, what they mean, and what can happen. Another issue is that out-of-phase information can result in phase cancellation. This can cause issues with summed audio signals sent to things like subwoofers and center channel audio on X:X multichannel systems. The other issues is that it's really annoying to listen to - it makes your sense of hearing do some bizarre things, since human localization is as much time based as it is amplitude. See this these links to Cornell and MIT: Prof Land; Cornell 25 kzbin.info/www/bejne/rqaaqHxnoJmXqJo 26 kzbin.info/www/bejne/e16np4mfmaqpjMk MIT: 22. Auditory cortex 1 Physiology and sound localization kzbin.info/www/bejne/d2GuoYeIlLqdodU

[@crnkmnky]

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