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| model.ts | Cymbal: plate bending via per-triangle shape operators, felt centre support, stick and mallet with angle and friction, far-field microphone | |
| page.ts | Cymbal: plate bending via per-triangle shape operators, felt centre support, stick and mallet with angle and friction, far-field microphone | |
| presets.ts | Bead drum: hex-lattice round head, felt mallet contact, top view and cross-section; shared instrument page | |