2 "challenge_id": "string-pluck-v1",
3 "title": "Plucked damped string: pickup velocity",
4 "version": 1,
5 "output": {
6 "type": "wav",
7 "sample_rate_hz": 48000,
8 "num_samples": 96000,
9 "channels": 1,
10 "sample_format": "float32",
11 "signal": "transverse velocity at the pickup point",
12 "signal_unit": "m/s",
9d7f24cDefine the pluck as the static equilibrium under a raised-cosine finger load; w = 6 mm, signal scale 2.4 m/sJeremy Magland 13 "signal_scale": 2.4
15 "parameters": {
16 "L": 0.65,
17 "c": 143.0,
18 "sigma0": 3.0,
19 "kappa": 0.004,
20 "h": 0.002,
21 "x_p": 0.1625,
9d7f24cDefine the pluck as the static equilibrium under a raised-cosine finger load; w = 6 mm, signal scale 2.4 m/sJeremy Magland 22 "w": 0.006,
ddfc839Add string-pluck-v1 challenge, solution schema, and scoring toolsJeremy Magland 23 "x_m": 0.54
24 },
25 "metrics": {
26 "primary": "waveform_l2",
27 "waveform_l2": {},
28 "spectrogram_l2": {
29 "window": "hann_periodic",
30 "n_fft": 2048,
31 "hop": 512
32 }
33 },
03370d1Register solution repositories and build the comparison site here; optional HDF5 field export in the schema and specJeremy Magland 34 "reference_solution": null,
35 "fields": {
36 "format": "hdf5",
37 "quantity": "transverse displacement u(x, t)",
38 "units": "m",
39 "nx": 201,
40 "nt": 4001,
41 "frame_rate_hz": 2000,
42 "dtype": "float32"
43 }