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