range of frequency.

[xpei at gwdgv1.gwdg.de]

Dear Readers. 
	May anyone so kind tell me that what is the range of frequency 
when people speaks. What is the frequency differences between man and women, 
and between children, boys and  girls. What is the difference in hamonics. 
Thank you in advance.             Sincerely yours,  Xstern  Peiter, 
                                                Goettingen University.