modulator

from The Collaborative International Dictionary of English v.0.48

Modulator \Mod"u*la`tor\, n. [L.]
   One who, or that which, modulates. --Denham.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

26 Moby Thesaurus words for "modulator":
      alleviative, alleviator, anodyne, assuager, balm, calmative,
      cushion, dolorifuge, lenitive, mitigator, moderator, mollifier,
      pacificator, pacifier, palliative, peacemaker, restraining hand,
      salve, sedative, shock absorber, soother, soothing syrup,
      stabilizer, temperer, tranquilizer, wiser head