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Old 10-27-2009, 10:26 AM   #7 (permalink)
speedoflife
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Probably has to do a lot with age as well. Hearing in the upper frequencies decreases pretty progressively with age. My 55 year old father cannot hear anything above 11kHz, while I can hear up to around 17~19kHz. That is a pretty broad range, especially for "high-pitched noises."
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