HUMMINGBIRD demonstrates how curvilinear poles filter persistent sound.

Imitating nature and a tightly knit grove of trees, the poles create the conditions for 'sonic crystal' acoustic filtering and attenuation. In this short demonstration video, you can hear subtle 'drop outs' of sound, and shifts of pitch.

A colourful decoy applique attracts passersby; it visually morphs and 'shape shifts' as you circle the sculpture, and with every turn draws attention to the 'sonic crystal' sound effect.

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