Monophonic /(?)/

Mon·o·phon·ic

Monophonic

a.
  1. Single-voiced; having but one part; as, a monophonic composition; -- opposed to polyphonic. (Mus.)
  2. Of or relating to a system for recording and reproducing sound, which has only one sound channel; also called monaural or mono. It contrasts with stereophonic (or stereo), quadraphonic, or surround-sound, which have two or more channels, and can thus reproduce the effect of the sound coming from more than one direction.