Resonating Bodies

[ Resonating Bodies, fixed medium, November 2008, 11'22", WFS/Stereo ]

This work focuses on the possibilities of spatially organized groups of impulses and resonators. The impulses are used both as an excitation momentum for the resonators on the one hand and a rhythmical accentuation on the other hand.

Resonating bodies is composed for the wave field synthesis (WFS) system of 'The Game of Life'. This WFS system comprises of 192 specially designed loudspeakers and provides listeners with an immersive sonic experience that is impossible to experience in ones own home environment. Nevertheless also a 2 channel version was realised.

The source material of the piece was generated with analogue voltage control synthesis of the BEA5 studio of the Institute of Sonology. Two different types of source material were generated. Each type consists of five independent sound files. The first type can primarily be described as irregular rhythmical impulses. The second type as highly dense noise with slow amplitude envelopes.

The piece starts with a layered spectrum of smoothly changing resonating tones that give a spacious impression. Then followed up by impulses that have a verb tail that define the size of a virtual room. The impulses go through different transformation processes which change the thickness and sound colour. Subsequently the impulses trigger random amplitude envelopes to introduce the continuity in the second part. The second part of the composition introduces the resonating bodies. The resonance is generated by 6 harmonically related groups each consisting of 9 resonating filter banks. The groups are spatially arranged in six squares (only in WFS playback). High dense noise with slow amplitude changes excites the resonators. Through this procedure spatially arranged choir sounds occur.
The essence of the last part of the piece is ‘deconstruction'. The irregular impulse rhythms excite the resonators while the transformed impulses of the first part are superimposed.