Ring-Modulated Feedback in BEA5

This video shows a feedback patch that includes a delay (Studer A80 tape recorder), a ring modulator, a reverb (Lexicon PCM 90) and a modified Bruel & Kjaer third-octave filter. The technique was developed by Jaap Vink in the 1970s at the Institute of Sonology in Utrecht and can be heard in works by many composers, particularly those of Roland Kayn. This video is dedicated to Jaap Vink and was recorded and edited by Siamak Anvari.