What if an adult gets his headphones that are able to play 20hz with bass and everything and plays?

... ultrasound for about an hour or 2. Are there any long term affects of exposure to ultrasound from 10-20hz or:... ultrasound for about an hour or

... ultrasound for about an hour or 2. Are there any long term affects of exposure to ultrasound from 10-20hz

or:... ultrasound for about an hour or 2. Are there any long term affects of exposure to ultrasound from 10-20hz

or:I have heard some rumors, but it's not certain whether the effect goes in the ears or comes from body parts shaking. Why don't you experiment and see what you find.

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