A myth then apparently. Interesting though, that: The "phenomenon" of bone conduction is generally credited as being discovered in the 1500s (though some say it can be traced back to around 2AD). A physician, mathematician, philosopher and all-around brilliant fella' by the name of Girolamo Cardano noticed that it was possible to hear through a rod or spear when placed between the teeth. He detailed his findings in his controversial publication De Subtilitate, but the information hadn't really been applied to anything, let alone to help the deaf or hearing-impaired, until later. G. On Sat, Nov 11, 2017 at 7:44 PM, John Mardinly <[1]john.mardi...@asu.edu> wrote: Beethoven's deafness was caused by "inner ear" problems, sometimes called labyrinthitis, a form of nerve deafness, not mechanical problems, such as damage to the eardrum or the small bones of the inner ear. As such, it is unlikely that the bone conduction would have been any use to him. A. John Mardinly, Ph.D., P.E.
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