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That loud, ear-bleeding noise that plays before every movie in a theater that is certified by THX. It's 30 synths playing at once, ascending and descending in pitch before stopping to create a 30-note chord.
Alice: Are you going to watch that new movie with me?
Bob: For the last time, I'm not going. The theater's THX-certified, I don't want to make my ears bleed because of that damn deep note.
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by Yahoo Himself June 28, 2016
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