http://www.intelihealth.com/IH/ihtIH/WSIHW000/20813/28973/211237.html?d=dmtHealthAZ

It is typically harder to hear high-pitched tones (women's voices, violins) than low-pitched ones (men's voices, bass guitar).

Noise Hurts.. Right to a Quiet Society for soundscape and awareness and protection.. I love quiet.
right to quiet homepage...

http://www.quiet.org/faq.htm

I don't believe a voice.. Hearing a voice..
Is truely loud enough at normal conversation levels,
to damage ones hearing at at all.

Eventually we all have to learn to be able to listen to voices again...

http://www.tinn.com/hyperacusis.html