Quadraphony and Quadraphonic

Quadraphony noun - A stereophonic sound recording or reproducing system using four separate channels.

Quadraphonic and quadraphony are semantically related. In some cases you can use "Quadraphonic" instead an adjective "Quadraphony".

Quadraphonic adjective - Of or relating to quadraphony.

Quadraphony and quadraphonic are semantically related. Sometimes you can replace term "Quadraphony" with "Quadraphonic", this adjectives are similar.