In the "Eliminate Phasing and Comb-Filtering" YouTube video, the speaker explores the challenges of sound reinforcement and music playback, specifically addressing the issue of sound radiating from multiple sources. He notes that while sounds naturally originate from singular points in space, live sound reinforcement often involves sending the same signal to multiple speakers, resulting in comb filtering and phase interference. The speaker emphasizes the significance of understanding these concepts to achieve more audio realism and prevent mixing problems. He conducts an experiment using two pink noise sources, demonstrating the cancellation and interaction of sounds when the same signal is sent to both speakers, and the absence of interference when separate sources are used. This principle can be applied to instruments like kick drums and guitars, where using different microphones or EQ settings can minimize interference and enhance sound quality. Furthermore, employing multiple pink noise sources during sound system measurements can eliminate interference issues and ensure more accurate results.
also check out this video for more information and demos on the subject:
https://youtu.be/4rp0z7h-Srw?si=lOZI9q1Y3g-TpIpy
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00:00 Introduction
00:18 Multiples of Same Sound is Unnatural
01:44 Multiple Sounds Same Place is Unnatural
03:19 Demo Description
03:53 Phase and Comb-Filter Demo
04:59 Elimination Of Phase and Comp-Filtering
05:42 Using Decorrelation
07:26 Outro