Roberto Pugliese

Equilibrium Variant
This work has the purpose of exploring the occurrence of the Larsen effect (also known as feedback) through the use of mobile devices in a three-dimensional space. The distinctive screech of the Larsen effect typically occurs when a microphone catches the sound emitted by a speaker. It engages when the microphone is located too close to the speaker, and gets in the way of its frequency. The microphone amplifies and reproduces the speaker’s frequency with an ever-increasing width, virtually unlimited, in practice stopped by the amplifier’s clip. On a ground support, two mechanical arms are located. At the end of one arm there is a microphone, and on the end of the other there is a speaker. A software, created with this specific purpose, manages the position of the arms in a dynamic way, and provides that the distance between the microphone and the speaker never causes the amplifier to clip. This way, the system tends to reach an equilibrium that is physically impossible to attain. The struggle to balance creates an acoustic and visual dimension that is never the same: the frequency of feedback and the movements of the mechanical arms are always different and change in real time.


geometric death frequency 141

The title of the piece is a pun that, with irony, alludes to the exceeding of tradition, irreconcilable dichotomy between life and death in a sculpture made, provocatively, by lifeless forms“, adds Diaz. “The line between life and none-life is more fleeing than we usually think: think about a virus that attacks a complex organism and reproduces in the same way as a micro-organism, even though it’s only an agglomerated of lifeless molecules: a natural crystal that, even though is a stone, can be born and undergo a fascinated process of growth that mimes perfectly the ways of an organic life“.


radial and blaus
‘radial’ and ‘blaus’ are two interactive lighting installations, both a result of the collaboration between catalonia-based digital research collectives MID (media interactive design) and playmodes. ‘blaus’ introduces the abstract realm of three dimensional geometry through the mediums of audio and illumination – this could manifest as a cube or a blossoming flower, a grid or a jellyfish, a mutant framework of reflecting lights which submerge the audience into a multi-faceted universe, driven by hidden forces of the architecture. ‘blaus’ is an immersive space where audio-visual elements relate
intimately to impact on the visitor. the process led the designers to build most of the software and hardware elements themselves, by means of algorithm design, digital fabrication techniques and craft handwork. on the hardware side, the use of open source technologies, such as arduino, allowed us to create a flexible electronic system easily addressable by opensound – control data. ‘duration open source software by
james george was used in order to independently control, compose, and play a full score for the laser diodes, servomotors, lights and music.on the sound design side, all music and sound effects are made through the use of audio programming environments such as predate and reactor.
custom digital instruments are made in order to exactly match the resonant frequency of the space and its harmonics.
‘blaus’ is an immersive space where audio-visual elements relate intimately to impact on the visitor.