The human voice has a wide frequency range..

The Frequencies of a human voice allways overlaps the frequencies of certain instruments..

http://www.futureproducers.com/forums/showthread/threadid/93153

The human voice is a natural part of life that one must learn to adapt to .. Overtime..
It's a part of life as ears are made for the human voice...
At a normal level of volume.. And even heard thru earplugs...

If the human voice being heard was not created or made to be natural in nature and the frequencies of a voice..
could be enough to damage ones hearing for life...

And as talking is a usual sound in ones environment and the world...

Then a hyperacusis person who have been damaged by human voices... could never recover from that expirence again..
One that hyperacusis people expirence with family and friends and at work and thru music and life in general all the time..

So.. Is a human voice natural.... One that is natural to be heard and expirenced.. By the human ear...
And as people aren't allways quiet or do talk around a hyperacusis person as a part of normal life..

Even whispers have a wide range of frequecies.
Does listening to whispers from your family and friends and at work or in music totally destroy the human ear to recovery..

Why music therapy for hyperacusis people?
Why sound machines??
Do not theses sounds carry a wide of frequencies at different levels of the sounds themselves..

Are people's ear's truely destroyed by the listening to human voice's..
Never to recovery again??

What is natural in nature... Are birds natural?
What is the frequency range of a bird...
And is that meant to be heard by a human ear....
Or can birds destroy ones hearing for life..

So what is natural about a human voice as voices are the base's of life..

And the sounds of life does not fit into a box...