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Our teenager told us that kids at school drive him crazy with their high-pitched ringtones at school all day. After a little investigation, we found out that kids use these ringtones, because teachers can’t hear them. 

So at dinner tonight, we decided to test this whole theory out. I downloaded five ringtones in different kHz levels from www.teenbuzz.org. I downloaded an 8, 12, 16, 17 and 22. Cheryl and I could hear the 8 and the 12, but we could not hear 16 and above. The kids could hear everything up to 22, which they could not hear for some reason. 

The video shows their reactions to different ringtones. 

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