Untitled II – Sound Sculpture/ Instrument by Marianthi Papalexandri-Alexandri and Pe Lang.
Untitled II builds on modified membranophones developed by Marianthi Paplexandri-Alexandri as main instruments utilizing Pe Lang’s motor-activated devices.
Materials: motors, acrylic glass, nylon line, silicone | Year: 2010
Untitled V – By Papalexandri-Alexandri and Pe Lang.
Materials: actuator, metal, 10 speakers | Size: 600 x 250 mm | Year: 2013
Untitled V is a sound sculpture that consists of miniature speakers acoustically activated by a motor driven mechanism. A nylon thread is fastened through a hole at the center of the membrane; the end of the nylon thread is loosely secured to a motor turned rosined wheel to produce friction. Sound is produced by the action of the rim of the rotating wheel rubbing the thread as the wheel is turned. The two surfaces alternating between sticking to each other and sliding over each other, with a corresponding change in the force of friction. The motor speed is reduced at the lowest speed. The slow turn of the wheel creates changes in the tension of the thread, resulting as sounds (crackling impulse) in the membrane of the speaker. Untitled V creates a very quiet listening experience.