Modulator | Webster's Dictionary of the English Language

modulator
mŏdŭlātor, ōris, m. [modulor], one who measures by rule, a director of music, a musician (poet. a...

A New Latin Dictionary by Charlton T. Lewis Ph.D. and Charles Short, LL. D.
modulator
modulātor ōris, m modulor.—In music, a director, musician : optumus, H. ...

An Elementary Latin Dictionary