QDB: Quote #210672

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-> From Ultor, to House:
- a friend back at RPI built a "headache generator". He read that the resonant
- frequency of sinus cavities is in the mid-30KHz range and built an oscillator
- to produce that and put it in the heat vents going to the upstairs
- apartment where they were prone to play really loud thumpa-thumpa music.

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