Yamila Ríos

Composer :: Performer :: Sound Artist

© Yamila Ríos 2010-2014

Covex

COVEX is a collaboration between composer and sound artist Yamila Rios and visual artist Joris Strijbos. In this audiovisual performance the duo researches the relations between electro-acoustic sound and diffracted light-patterns in a diagonal mix between the two media.


When a light illuminates a transparent surface wave each point on the illuminated surface acts as a source of secondary spherical waves. The light at any point in the scattered light field is made up of waves, which have been scattered from each point on the illuminated surface. If the surface is rough enough to create path-length differences exceeding one wavelength, giving rise to phase changes greater than 2π, the amplitude, and hence the intensity, of the resultant light varies randomly. The diffracted light would be projected on a round screen hanging from the ceiling. The speed and the rotation of the lasers would be controlled with different motors. The result of it would be organic patterns of light.

 


The sonic output of Covex consists on a live performance of an extended cello. The sound of the cello is going to be transforming with the computer in order to create polyphonic masses of sounds. As we know, the cello is a monophonic instrument. Traditionally the main emphasis has been put on its capacities to do pitches and rhythms. In order to find a new musical expression with the instrument beyond these two parameters in COVEX we had expand the sound of it. Technically the sound of the cello goes to 8 different granulators, builds with the program Max/Msp.



Each granulator can have a maximum of 32 voices. In each of these granulators 6 different parameters are controlled. So far these parameters are control by different algorithms on the computer. In Covex the masses of sound will morph from a very fast noisy environment where speed is the main focus to a serene and harmonic drone. At the beginning of the piece the sound of the cello is unrecognizable. During the development of the piece the sound of the instrument will start to be revealed. Further on this 256 voices of sound are spatialized on a 6-channel system, creating an astonishing and power full stream of sound.



Within the visual domain shooting laser beams trough transparent objects forms the “speckle pattern”. The result is an abstract landscape consisting of intense noise drones and complex patterns of light.



Why by sea


 

Audiovisual performance for cello and Live Electronics created in 2006 by Hee-Seung Choi (Visuals), Byungjun Kwon (Electronics), Yamila Ríos (Cello). The performance is about a Korean love story.

 



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