Definition of periphonic in US English:

periphonic

adjective

  • Of sound reproduction: involving speakers at different heights so as to add a vertical distribution of sound to the horizontal one of stereophony.

Origin

1970s; earliest use found in The Times. From peri- + -phonic. Compare Hellenistic Greek περιϕωνεῖν to sound around, re-echo.

Pronunciation

periphonic

/ˌpɛrɪˈfɒnɪk/