What is "frippertronics"

Frippertronics is a specific tape looping technique used by Robert Fripp. It evolved from a system of tape looping originally developed in the electronic music studios of the early 1960s that was first used by composers Terry Riley and Pauline Oliveros and made popular through its use in ambient music by composer Brian Eno. The effect is now routinely found in many commercial loop station guitar digital effects boxes such as the Boss RC-3.