Jesper Norda | Pendulum Wave
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Foto: Anders Bergön

Pendulum Wave (2024) (complete audio sequence, duration: 1 hour) (stereo version)

Pendulum Wave was installed in the fall of 2024 in the north hall of Kulturcentrum Ronneby Konsthall.

Nine plywood panels are placed in a circle with a diameter of about 15 metres. On each disk a surface transducer is placed. They are held in place with straps. This allows the plywood sheets to act as loudspeaker membranes.

In the solo exhibition Timmar at Ronneby Konsthall, the construction housed two sound pieces, Pendulum Wave and Gravitation Events #3. These were played alternately every two hours.

“Imagine a plummet swinging back and forth - measuring time, like a clock. If you have a number of pendulums of gradually increasing lengths and let them simultaneously swing back and forth, a particular visuality emerges: the pendulums produce waves, rhythms and random patterns, which sound in a completely static rhythm.

The frequency of the rhythm in the different sheets differs minimally from each other, causing phase shifts and patterns. Every six minutes or so, the bells will come together again, for a moment creating something like simultaneity.

The bells on each disc chime in time, only to phase out again from each other. The sound, as well as the space, breaks up again.

Foto: Anders Bergön

Pendulum Wave (2024) (documentation video)

Tänk dig ett lod som svänger fram och tillbaka - mäter tiden, som en klocka. Om man har ett antal pendlar med gradvis ökande längder och låter dessa simultant svänga fram och tillbaka uppstår en särskild visualitet:
pendlarna producerar vågor, rytmer och slumpmässiga mönster.

Pendulum Wave är ett försök att göra en hörbar version av detta fenomen.