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The ISOLATOR, invention from 1925
(lemmy.world)
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this post was submitted on 03 Dec 2023
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I experienced discomfort, like mild pain too. I thought maybe it was because the addition of extra sound to cancel out sound increased the total volume in a way that was inaudible, but I don’t really know the physics behind how the cancellation works. This article says it is an effect caused by pressure similar to how your ears pop at different altitudes.