18-string Aeolian Harp — Interactive Design Study

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18-string acoustic interface

Arrangement 3 × 6

Spacing 27 mm c/c

Speaking length 2550 mm

Saddle radius 150 mm

Break angle 8° nominal

Live afterlength 178 mm

First redirect r125 / z524 mm

Six-string family — repeated ×3

S Ø mm f₀ after 10.5542.4607 20.6042.0602 30.6541.7597 40.7041.4593 50.8040.8585 61.1038.2547 Hz

Wind

Ambient 1.6 m/s

Heading 270°

Relative bay excitation

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18-string engagement

Playback

Listener 1.5 m

Volume 25%

Locked strings 0

Afterlength activity quiet

Shell top rain-tight

Shell bottom open / drained

Cutaway on

Reduced-order physical audition. Wind speed and direction establish local wake forcing; each string independently captures, releases and hands off between modes. The live afterlengths and six diaphragm-drive locations can sympathetically bloom when their frequency relationships align.