Vox humana

from WordNet (r) 3.0 (2006)

vox humana
    n 1: an organ reed stop producing tones imitative of the human
         voice

from The Collaborative International Dictionary of English v.0.48

Vox \Vox\, n. [L. See {Voice}.]
   A voice.
   [1913 Webster]

   {Vox humana}[L., human voice] (Mus.), a reed stop in an
      organ, made to imitate the human voice.
      [1913 Webster]