Feedback Loop for String Quartet and Contact Microphones (2016)
for violin, viola, cello, double bass and electronics
By João Renato OrecchiaZúñiga
Live performance at UNYAZI Electronic Music Festival, Cape Town 2016
Feedback Loop for String Quartet and Contact Microphones is an experimental process score. Contrabass, cello, viola and violin are networked by a chain of contact microphones and transducer speakers to form a loop of vibrational feedback between the instruments. Each segment of the chain is fed into an equaliser so that speci c frequencies may be ampli ed. The vibration of the strings on one instrument excites the strings on the next and so on, causing a drone of overtones, hums and squeals.
One performer will improvise with the equalisers for several minutes and then invite the remaining performers to intervene in the vibrational circuit by improvising on their respective instrument.
19 июн 2018
