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proof-of-concept / toy-instruments

Cymbal: free plate with rigid-body motion removed (no support); lighter default damping

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actions/setup-node@v419s
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npm: 10.9.9
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added 62 packages, and audited 63 packages in 3s

15 packages are looking for funding
  run `npm fund` for details

3 vulnerabilities (1 moderate, 2 critical)

To address all issues (including breaking changes), run:
  npm audit fix --force

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Run npm test18s
▸ Run npm test

> toy-instruments@0.1.0 test
> vitest run


 RUN  v3.2.7 /mochi/workspace

stdout | test/cymbal.test.ts > cymbal lattice > bending energy matches the plate (nu = 1/3) for bending, doming and twisting
cylinder bending energy / plate 0.9997
sphere bending energy / plate 0.9994
saddle bending energy / plate 0.9994
twist bending energy / plate 0.9994

stdout | test/cymbal.test.ts > cymbal lattice > a free flat plate rings near the (2,0) mode of a free circular plate
free (2,0) measured 67.4 Hz, ideal 69.8 Hz

stdout | test/cymbal.test.ts > cymbal lattice > energy balances with a glancing stick hit, friction, damping and rigid motion removed
contact samples 24 peak N 864 balance 5.57e-3

stdout | test/cymbal.test.ts > cymbal lattice > removing rigid motion leaves the plate with no net momentum and keeps the hit point vibrating
mean y 0.0000 mm, max |y| 8.726 mm

 ✓ test/cymbal.test.ts (4 tests) 14169ms
   ✓ cymbal lattice > a free flat plate rings near the (2,0) mode of a free circular plate  11158ms
   ✓ cymbal lattice > energy balances with a glancing stick hit, friction, damping and rigid motion removed  1132ms
   ✓ cymbal lattice > removing rigid motion leaves the plate with no net momentum and keeps the hit point vibrating  1783ms
 ✓ test/string.test.ts (5 tests) 509ms
stdout | test/drum.test.ts > drum > small centre press rings near the ideal membrane fundamental
f01 measured 196.3 ideal 193.8

stdout | test/drum.test.ts > drum > mallet bounces off and energy balances
contact ms 8.58 peak N 22.0 balance 0.0000036185980286520176

 ✓ test/drum.test.ts (3 tests) 1008ms
   ✓ drum > small centre press rings near the ideal membrane fundamental  680ms
   ✓ drum > mallet bounces off and energy balances  322ms
 ✓ test/hinge.test.ts (2 tests) 7ms

 Test Files  4 passed (4)
      Tests  14 passed (14)
   Start at  11:12:30
   Duration  17.16s (transform 335ms, setup 0ms, collect 446ms, tests 15.69s, environment 4ms, prepare 363ms)
Run npm run build7s
▸ Run npm run build

> toy-instruments@0.1.0 build
> tsc --noEmit && vite build

vite v7.3.7 building client environment for production...
transforming...
✓ 31 modules transformed.
rendering chunks...
computing gzip size...
dist/index.html                   0.69 kB │ gzip:   0.42 kB
dist/assets/worker-CDTtXZiu.js    9.08 kB
dist/assets/index-KHDJPxVN.css    7.74 kB │ gzip:   2.27 kB
dist/assets/index-Dhi94Y3a.js   602.09 kB │ gzip: 159.94 kB
✓ built in 2.43s
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