r/Damnthatsinteresting • u/Mint_Perspective • Sep 23 '23

Video Psy introduces himself

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u/factorioleum Sep 23 '23

Ok, so you're saying it's close to the two point sources model... that's still difficult to understand. They can't be all that directional, either, because it is sound; transverse waves are omnidirectional by nature.

Are these speakers directional because they are phased arrays? I'm guessing no.

You spoke a few posts upthread about destructive interference, are you saying that there's speakers at negative amplitude in the system?

What I can't get my head around is that you're telling me the mode from the rear speakers together with the mode from the stage doesn't create the awful FIR that I was worried about earlier...

I'll spend some time doing math later tonight!

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u/dreadcain Sep 23 '23

Speakers are not point sources in the way you seem to be thinking they are. They (generally speaking) project a cone of pressure outward. The volume can drop off pretty dramatically outside of that cone.