This is the homepage of UK-based Japanese artist Ryo Ikeshiro whose practice deals with sound, media and computation.

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Construction in Kneading

Live audiovisualisation of a Mandelbox fractal.

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Challa

Soundtrack to audiovisual installation in collaboration with Meital Covo.

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Construction in Zhuangzi

Audiovisual work based on a modified Lorenz dynamical system.

Construction in Zhuangzi is a live “audiovisualisation”: the simultaneous sonification and visualisation of the same process and data in real-time. It is based on a modified Lorenz dynamical system, a three-dimensional model of convection that is non-linear and chaotic and has sensitive dependence on initial conditions or the “butterfly effect”.

A performance consists of an attempt at understanding and controlling the mechanisms of the near-autonomous generative system through an improvisation involving the modifications of the parameters of the Lorenz. Moments of human intervention are indicated by a colour inversion and an audio click. Lorenz stated that the equations do not produce realistic representations at large values of the parameters of the equations. In the work, these parameters are taken to beyond their original real-world limits in order to explore a speculative world. An appropriately machinic or post-human sensibility is evoked through a digital noise/glitch presentation of the emergent phenomena.

The work is featured in the Electronic Music volume of the Cambridge Introductions to Music series. A fixed-media version of the work was awarded 2nd prize at the Fresh Minds Festival, TX, and was part of the official selection for Videomedeja – 16th International Video Festival and MADATAC 04 Contemporary New Media Audio-Visual Arts Festival.

For more details, see the article “Audiovisual Harmony: The realtime audiovisualisation of a single data source in Construction in Zhuangzi Organised Sound 17(2), 2012. It is also featured in the Electronic Music volume of the Cambridge Introductions to Music series.

A-B-A

29.06.2011
Japan earthquake and tsunami relief fund raiser

6 – 8 pm Wednesday 29 June 2011
Small Hall/Cinema, Richard Hoggart Building
Goldsmiths College, Lewisham Way, New Cross, London SE14 6NW

Tom Mudd feedback joypad

Ryo Ikeshiro new generative audiovisual work

Manabu Shimada glitched field recordings

The earthquake and tsunami of 11 March in Japan and subsequent after shocks have claimed over 15,000 lives, with 8,700 missing. Over 270,000 homes suffered damage, and almost 150,000 homes were completely or partially destroyed. Two months on, more than 100,000 are still living in evacuation shelters. The international response has certainly helped in starting the relief operation, but there is still much to be done. Any donations will be gratefully received.

The series will present two performances of each work with a talk/discussion in between. Program notes or explanations heard prior to experiencing a piece of music can sometimes affect how we listen in an unnatural way. On the other hand, they can give us useful pointers in appreciating music that might otherwise be difficult. Having two performances is a way of hopefully resolving these issues, with the first listening being unspoilt and the second more informed.

Please join us at any point in the evening. For the discussion, see links for blurbs and related articles. With kind support from EMS and SPR.

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Genosong

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Genosong is an improvising ensemble with live sampling. It incorporates live electronics as an augmentation of traditional acoustic instruments in an improvisational context through live sampling alone: no pre-recorded sounds or synthesis methods are used. A natural and organic electroacoustic soundscape is produced that acts as an additional voice in the ensemble; this results in further development of the musical material by the players that is then also sampled. The creation of this feedback allows for extremely interesting emergent behaviour where smooth and gradual processes are juxtaposed against abrupt and chaotic changes.

Outsider Rehearsals 2009

Track 01

Track 02

Play each track separately, or download album as single zip file (flac) with artwork.

Chien-Chun Lin: soprano
I-Chin Li: piano, percussion
Guillaume Viltard: double bass
Tom Jackson: reeds (track 02)
Ryo Ikeshiro: acoustic guitar, laptop

Track 01 recorded 02 Dec 2009 (take 1)
Track 02 recorded 18 Nov 2009 (take 2)

Live footage:

PulseCubes

PulseCubes
– interactive sound installation demo

PulseCubes is an interactive sound installation. Visitors are invited to become part of an implicit feedback loop whose other components include a set of small cubes on a flat surface, computer vision and digital signal processing. The cubes are tracked by a web camera positioned overhead and processed through a partially opaque system implemented in the programming environment Max/MSP/Jitter.

Visitors have the opportunity to influence and interfere with the notion of time by playing with the cubes. Their placement and movement affect features of the audio such as rhythm, tempo and synthesis parameters as the passage of time is stretched and constricted. A chain of indelible “traces” are left in the position of the cubes and the resulting sonic environment and physical vibrations.

PulseCubes was part of The Dissolving Cube at the Portman Gallery, London in Nov-Dec 2009, re:new Digital Arts Festival, Copenhagen in May 2010 and Sound Travels Festival of Sound Art, Toronto in Aug 2012.

The Dissolving Cube opening night, featuring PulseCubes

Construction in Self

Construction in Self is a generative work based on the Lorenz dynamical system. It has sensitive dependence on initial conditions, giving rise to what is commonly known as the “butterfly effect”. Its generative form is suggested by this property and the work takes an input prior to performance as initial conditions from which a different piece is produced each time. A diverse variety of behaviours are observed ranging from periodicity to chaos that yield interesting results as signal, control and meta data, suggesting a self-similar microcosm that is complex yet deterministic which can be replicated from the same initial input. The title is a reference to John Cage’s Construction in Metal series (1939-42) in which simple sequences of numbers – referred to as “rhythmic structures” – are used as a basis for structures at different time-scales.

Construction in Self has been performed at noise=noise the Basement Series 2009, London, ICMC 2010, New York, CONTEMPORANEA 2011 ‘Japan 2011′ Festival di Nuova Musica, Udine and 希/日 GR/JP at Het Nutshuis, Den Haag.

See “Generative, Emergent, Self-Similar Structures: Construction in Self for more details.