| http://www.w3.org/ns/prov#value | - ???These portable devices are not inherently harmful to hearing because of the way they are coupled to the ear, but there are certainly safe levels at which one can listen to them,??? Kileny says. ???My recommendation is to listen at such a level that one can still hear conversation and other people in their environment do not accuse them of shouting when they attempt to converse.???
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