[{"data":1,"prerenderedAt":46},["ShallowReactive",2],{"work-\u002Fworks\u002Fknock-on-wood":3},{"id":4,"title":5,"body":6,"collaborators":26,"description":27,"extension":28,"img":29,"meta":30,"navigation":31,"path":32,"roles":26,"seo":33,"stem":34,"tags":35,"type":43,"url":26,"year":44,"__hash__":45},"works\u002Fworks\u002Fknock-on-wood.md","Knock on Wood",{"type":7,"value":8,"toc":22},"minimark",[9,13,16,19],[10,11,12],"p",{},"Three wooden objects respond to visitors. Approaching an object brings up memories of childhood. Knocking on it brings up what humans make from wood – musical instruments and artworks: each knock plays a guitar note, and a painting\u002Fdrawing appears on the object. The three objects are tuned to form a chord. After a knock, the object ignores the approaching hand until its note has faded.",[10,14,15],{},"A single projector above the objects maps their top surfaces: a photograph of the wood beneath at rest, white light as a hand approaches, and the artwork after a knock.",[10,17,18],{},"Each object carries a balsa panel with a capacitive proximity pad and a piezo pickup underneath. One ESP32-S3 per object measures proximity continuously, detects knocks and their intensity, and sends both via Bluetooth LE to a laptop running Max\u002FMSP. Max\u002FMSP runs a state machine per object (rest, approach, answer), plays the sound through a stereo system in the room and drives the projection in MadMapper via OSC. Because all three objects share one stereo image, knock-to-note latency is kept under 60 ms – the immediate response is what ties a note to the object that was knocked.",[10,20,21],{},"It was exhibited from 24.–27. September 2026 at KIND A ZIMMA in Klagenfurt, Austria.",{"title":23,"searchDepth":24,"depth":24,"links":25},"",2,[],null,"Interactive sound and projection installation with three wooden objects that answer a knock","md","\u002Fworks\u002Fmedia\u002Fknock-on-wood.jpg",{},true,"\u002Fworks\u002Fknock-on-wood",{"title":5,"description":27},"works\u002Fknock-on-wood",[36,37,38,39,40,41,42],"sound installation","interactive","projection mapping","composition","ESP32","Max\u002FMSP","MadMapper","art project",2026,"PRxE58itn0LiuJnyWo_sR1KWqfBjtwAYFnsYg_M8u3Y",1791765913702]