I'm 56 (57 in August) and can hear 15kHz, but not 16 and higher. So I guess my hearing's pretty good for an old coot. My dog, however, wasn't very happy with me testing those! I think she would have covered her ears if she could!
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XBox 360 S, 16GB iPhone 4S, iPod Classic 160 GB, Dell Inspiron Mini 1018; Macs: Mac Mini 2.4 GHz 6 GB RAM; Macbook 2.0 GHz 3 GB RAM; MacBook Air 11", 24" Cinema Display
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