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Question: How is it that we can change the pitch, volume or even change our voice completely? I find it absolutely amazing for us to be able to do it, but it boggles my mind how!
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anon answered on 22 Jun 2010:
Hello Winchester. I guess it’s on the same principles as musical instruments. Depends on shape of upper airways (width of throat, shape of nasal passages, shape/size of uvula (funny hangy down thing at back of throat)), ability to control vocal cords to allow different amts air across them and muscles to force air over them. Also involves lips and lung capacity.
I guess the fact that there are so many points at which you can control sound accounts for the variety.
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