[Source: Scientific American]

Which, do you imagine, is harder on the human voice: [rock singer sound], or [soprano sound]—or this [beatboxing sample]?
Beatboxing, as musician Tom Thum was doing in that last example, uses the voice to mimic an incredible range of percussive instruments, from drums and cymbals to record scratches and didgeridoos.
But to make such, well, inhuman sounds, the performer contorts various parts of the vocal tract and pushes air at high velocity through the larynx, creating concerns that beatboxing might lead to long-term vocal damage.
So researchers took a close look at what happens inside the throat as the beat goes on. They snaked thin video cameras through the noses of four male beatboxers to watch their voice boxes during performance.
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