wrote in message
ups.com...

Two thoughts:

1. First of all, not all diseases of the ear will take the high tones

agreed. i read some studies of hearing loss in pro sound engineers. they
mix at very high levels which causes loss eventually. anyway, the midrange
is the most prominent range to be affected. unfortunately the midrange is
also the most important for human communication (300 hz to 3000 hz).

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