2 "sweep": {
3 "id": "damping-sigma0",
4 "title": "Damping: frequency-independent loss (push and release)",
5 "text": "sigma0 sets the decay of the lowest modes (T60 = 6.9 / sigma0). It stands in for everything that damps the sheet uniformly: the suspension, air drag, the material.",
6 "param": "sigma0",
7 "unit": "1/s",
8 "values": [
9 0.4,
10 1.15,
11 3.5
12 ]
13 },
14 "gainDb": 20,
15 "clips": [
16 {
17 "id": "damping-sigma0-0",
18 "label": "0.4 1/s",
19 "overrides": {
20 "sigma0": 0.4
21 },
22 "metrics": {
23 "peakPa": 0.04689148813486099,
24 "peakDbSpl": 67.40128039878171,
25 "rmsPa": 0.003659408514909804,
26 "centroidHz": 286.71229007930003,
27 "t60": {
28 "20-100": 11.65040273821738,
29 "100-500": 7.801210734651368,
30 "500-2k": 4.283847210393117,
31 "2k-8k": 6.603275915959762
32 },
33 "bandLevelsDb": {
34 "20-100": -0.6889274080166636,
35 "100-500": 0,
36 "500-2k": -8.359022369005451,
37 "2k-8k": -39.774186276077046
38 }
39 },
40 "gainDb": 20,
41 "peakDbfs": -6.578119687938675,
42 "run": {
43 "steps": 3072000,
44 "seconds": 38.28271630099998,
45 "nx": 39,
46 "ny": 58,
47 "dt": 0.0000013020833333333333,
48 "maxContactForce": 0
49 }
50 },
51 {
52 "id": "damping-sigma0-1",
53 "label": "1.15 1/s",
54 "overrides": {
55 "sigma0": 1.15
56 },
57 "metrics": {
58 "peakPa": 0.04646482318639755,
59 "peakDbSpl": 67.32188586389826,
60 "rmsPa": 0.0033498771907116485,
61 "centroidHz": 195.7169225189091,
62 "t60": {
63 "20-100": 5.414347622298749,
64 "100-500": 4.0120593180726445,
65 "500-2k": 2.724403865668108,
66 "2k-8k": 7.678595678417119
67 },
68 "bandLevelsDb": {
69 "20-100": -1.153481711330091,
70 "100-500": 0,
71 "500-2k": -6.774905483785499,
72 "2k-8k": -41.19767338483816
73 }
74 },
75 "gainDb": 20,
76 "peakDbfs": -6.657514222822115,
77 "run": {
78 "steps": 3072000,
79 "seconds": 38.30114604400005,
80 "nx": 39,
81 "ny": 58,
82 "dt": 0.0000013020833333333333,
83 "maxContactForce": 0
84 }
85 },
86 {
87 "id": "damping-sigma0-2",
88 "label": "3.5 1/s",
89 "overrides": {
90 "sigma0": 3.5
91 },
92 "metrics": {
93 "peakPa": 0.045560941100120544,
94 "peakDbSpl": 67.15125381117772,
95 "rmsPa": 0.002524148233201482,
96 "centroidHz": 152.86095600003824,
97 "t60": {
98 "20-100": 1.9183807048956798,
99 "100-500": 1.8391000957256611,
100 "500-2k": 1.892025300594661,
101 "2k-8k": 13.719411523033525
102 },
103 "bandLevelsDb": {
104 "20-100": -2.176242897362961,
105 "100-500": 0,
106 "500-2k": -8.29511776141829,
107 "2k-8k": -51.091168263652634
108 }
109 },
110 "gainDb": 20,
111 "peakDbfs": -6.8281462755426485,
112 "run": {
113 "steps": 3072000,
114 "seconds": 38.26752834900003,
115 "nx": 39,
116 "ny": 58,
117 "dt": 0.0000013020833333333333,
118 "maxContactForce": 0
119 }
120 }
121 ]
122}