Gravity harp
Este instrumento fue diseñado por Andy Cavatorta, encargado de hacer robots musicales en el MIT Media Lab. Se ocuparon 4 pendulos de once cuerdas cada uno para hacer esta arpa gravitacional. Hay un software que controla la rotación de cada péndulo y determina la nota que suena dependiendo de su posición dentro del balance del instrumento. El sonido de este instrumento se puede escuchar en la canción de “Solstice”.

Wave wall
A wall of 122 wind-activated pendulums are each magnetically coupled with its neighbors so that the whole wall moves as a slowly undulating surface similar to a large piece of fabric rippling in the wind. In winds greater than 15 knots, the wall’s coherent wave-like movement becomes more chaotic as the pendulums break their mutual magnetic coupling. The pendulums can also be manually activated.

TH-42PH10EK x 5
Five screens were installed by the artist as pendulums that swing continuously. As soon as all five have come to a standstill, they are pulled back into their original positions with the help of cable winches and are made to swing again – triggered by pulling a rip cord, a performative act that cannot take place without human intervention and which involves the exhibition supervisor in the installation. Each cycle, which lasts approximately 45 minutes, ends as soon as all five screens have come to a standstill and no more sound is produced by their movement. The sound is produced by the amplification of the friction to which the joints of the moving pendulum are subjected. Multiplication thus creates five oscillating loops that merge into one another with a time offset.

スティーヴ・ライヒ
סטיב רייך
스티브 라이히
СТИВ РАЙХ
Pendulum Music

Reich came up with the concept while working at the University of Colorado. He was swinging a live microphone in the style of the cowboy’s lasso, and noting the produced feedback, he composed for an “orchestra” of microphones.Three or more microphones are suspended above the speakers by means of a cable and stand. The microphones are pulled back, switched on, and released over the speaker, and gravity causes them to swing back and forth as pendulums. As the microphone nears the speaker, a feedback tone is created. Different lengths of cable will swing at different speeds, creating an overlapping series of feedback squeals. The music created is thus the result of the process of the swinging microphones.

ユナイテッド·ビジュアルアーティスト
美国视觉艺术家
our time

Our Time (2016) is the latest large-scale installation by United Visual Artists investigating our subjective experience of the passing of time. How long is a moment? At what rate does time actually pass? The work joins a series of kinetic sculptures that began with Momentum (2013); an installation designed as a ‘spatial instrument’ that was to reveal the relationship between expectation and perception when intersected with a physical space.
Our Time defines a physical environment where pendulums swing at a pace apparently unhindered by the laws of nature and where no single time measurement applies. The installation combines movement, light and sound as a multi-sensory, multi-dimensional canvas the visitor can enter. Pendulums swing, each to their own rhythm, as time flows through the grid. With light tracing the path and sound its echo, the passing of time becomes almost palpable.

ויליאם פורסיית
ウィリアム·フォーサイス
威廉‧科西
윌리엄 포사이드
УИЛЬЯМ ФОРСАЙТ
Swinging Pendulum

Suspended from automated grids, more than 400 pendulums are activated to initiate a sweeping 15 part counterpoint of tempi, spacial juxtaposition and gradients of centrifugal force which offers the spectator a constantly morphing labyrinth of significant complexity. The spectators
are free to attempt a navigation this statistically unpredictable environment, but are requested to avoid coming in contact with any of the swinging pendulums. This task, which automatically initiates and alerts the spectators innate predictive faculties, produces a lively choreography of manifold and intricate avoidance strategies.

Symphony in D Minor

‘Symphony in D Minor’ is an interactive sound and video installation on an epic scale. A thunderstorm contained within a series of large hand cast resin sculptures, each individual form is a unique instrument hanging from the ceiling. Suspended just within reach and activated by touch, the viewer sets the symphony in motion by pushing the forms through the air to trigger the various sound elements of the storm. Sensors relay individual recordings of thunder, lightning, wind and rain with alternating intensities to a full-scale sound system. Acting as both conductor and musician, the viewer creates an evolving composition out of atmospheric sounds, forging an environment that envelops the audience. Housed within each piece are 2 video projectors employing mapping software to evenly fill the surface of the forms. Like giant illuminated pendulums each sculpture radiates video projections that in their dormant state display abstractions of water droplets and slow moving clouds. As the sensors detect movement different ranges initiate more visual elements of the storm. Once activated, the form then shifts to a swirling torrent of clouds.

Simple Harmonic Motion study #5d

Behind the different incarnations, at the heart of the project lies the concept of creating complexity from simplicity. Through the use of custom software, a number of ‘agents’ are created and assigned a simple behavior. Each follow an extremely simple repetitive pattern of movement and sound. On their own, each agent is relatively monotonous, basic and mechanical. The repetition duration, motion and sound of each agent is precisely tuned such that the collection of all agents moving together, creates a unique, evolving and complex composition – both visually and sonically. The seed of inspiration comes from the motion of pendulums and other fundamental oscillatory phenomena which exhibit simple harmonic motion. The project extracts and amplifies these complex patterns, both through visual abstraction and emphasis; and also through sonifying the phenomena and creating musical patterns driven by the same equations that dictate the behaviour.