Jerry, the original book "Sound Therapy for the Walkman" by
Patricia Joudry, answers your question related
to yesterday's entry "08/17/06 - With reference to the hearing article above",
on rejuvenation the ear, and health in general.
Get the updated book here:
The original book came with a couple of typed pages saying that digital audio,
from CD's, was bad for your health, and they they where going to come out with
a book elaborating on that. I have not seen it if the did.
Also in the area of sound related to "08/17/06 - What?
Test your hearing with a few mp3 samples:". Some teenagers have created
high frequency ring tones for their cell phones that "old fogies" can not hear.