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Bad Neighbor!

Neighbor is using an ultra-high-frequency device against us at very high decibels. It causes constant low-grade nausea and a long-lasting ringing in the ears afterwards. Problem is, it can't really be heard because its such a high-frequency. Cops have come to our house, felt the nausea and ear-ringing themselves, but refuse to do anything about it because they can't "hear" it and we have no way of recording it. My question is: Can you point me towards a device that can record high decibel sound in very high frequencies so we can show objectively that this is happening? [more inside]
posted by captain cosine on May 28, 2012 - 51 answers

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