2 "sweep": {
3 "id": "thickness",
4 "title": "Sheet: thickness (push and release)",
2a2ba5cGallery: 23 sweep(s) renderedJeremy Magland 5 "text": "Bending stiffness grows with the cube of the thickness while mass grows linearly, so a thicker sheet has higher mode frequencies. The same 10 mm push, however, is a smaller multiple of the thickness, which weakens the nonlinear transfer of energy to the higher partials, and in these clips this effect wins: the sound becomes lower and purer with thickness even though the individual modes rise. Gauges 24, 22, 18 and 14.",
7 "unit": "mm",
8 "scale": 0.001,
9 "values": [
10 0.0006,
11 0.00079,
12 0.0012,
13 0.002
14 ]
15 },
16 "gainDb": 20,
17 "clips": [
18 {
19 "id": "thickness-0",
20 "label": "0.6 mm",
21 "overrides": {
22 "h": 0.0006
23 },
24 "metrics": {
25 "peakPa": 0.026952091604471207,
26 "peakDbSpl": 62.59124956773757,
27 "rmsPa": 0.002090962013990021,
28 "centroidHz": 187.85884592764293,
29 "t60": {
30 "20-100": 5.117754088625747,
31 "100-500": 3.3526774124413747,
32 "500-2k": 2.081227331078353,
33 "2k-8k": 7.855228088791764
34 },
35 "bandLevelsDb": {
36 "20-100": 0.1462256709363956,
37 "100-500": 0,
38 "500-2k": -6.3807161485354875,
39 "2k-8k": -37.12333620963394
40 }
41 },
42 "gainDb": 20,
43 "peakDbfs": -11.388150518982805,
44 "run": {
45 "steps": 3072000,
46 "seconds": 38.245727580999954,
47 "nx": 39,
48 "ny": 58,
49 "dt": 0.0000013020833333333333,
50 "maxContactForce": 0
51 }
52 },
53 {
54 "id": "thickness-1",
55 "label": "0.79 mm",
56 "overrides": {
57 "h": 0.00079
58 },
59 "metrics": {
60 "peakPa": 0.04646482318639755,
61 "peakDbSpl": 67.32188586389826,
62 "rmsPa": 0.0033498771907116485,
63 "centroidHz": 195.7169225189091,
64 "t60": {
65 "20-100": 5.414347622298749,
66 "100-500": 4.0120593180726445,
67 "500-2k": 2.724403865668108,
68 "2k-8k": 7.678595678417119
69 },
70 "bandLevelsDb": {
71 "20-100": -1.153481711330091,
72 "100-500": 0,
73 "500-2k": -6.774905483785499,
74 "2k-8k": -41.19767338483816
75 }
76 },
77 "gainDb": 20,
78 "peakDbfs": -6.657514222822115,
79 "run": {
80 "steps": 3072000,
81 "seconds": 38.265609803,
82 "nx": 39,
83 "ny": 58,
84 "dt": 0.0000013020833333333333,
85 "maxContactForce": 0
86 }
87 },
88 {
89 "id": "thickness-2",
90 "label": "1.2 mm",
91 "overrides": {
92 "h": 0.0012
93 },
94 "metrics": {
95 "peakPa": 0.06922033429145813,
96 "peakDbSpl": 70.78407393346563,
97 "rmsPa": 0.005886171979845025,
98 "centroidHz": 119.54543612933662,
99 "t60": {
100 "20-100": 5.101379763345999,
101 "100-500": 4.853927820906208,
102 "500-2k": 2.902751678289351,
103 "2k-8k": 7.388775733659361
104 },
105 "bandLevelsDb": {
106 "20-100": -0.8873422678845877,
107 "100-500": 0,
108 "500-2k": -9.86488395789507,
109 "2k-8k": -49.137753294749736
110 }
111 },
112 "gainDb": 20,
113 "peakDbfs": -3.19532615325474,
114 "run": {
115 "steps": 3072000,
116 "seconds": 38.32798625899991,
117 "nx": 39,
118 "ny": 58,
119 "dt": 0.0000013020833333333333,
120 "maxContactForce": 0
121 }
122 },
123 {
124 "id": "thickness-3",
125 "label": "2 mm",
126 "overrides": {
127 "h": 0.002
128 },
129 "metrics": {
130 "peakPa": 0.05244841426610947,
131 "peakDbSpl": 68.37404733068118,
132 "rmsPa": 0.007688486534950845,
133 "centroidHz": 97.1825439315884,
134 "t60": {
135 "20-100": 5.653290712472623,
136 "100-500": 5.1719473599191055,
137 "500-2k": 3.7329840807753065,
138 "2k-8k": 7.294525370435566
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140 "bandLevelsDb": {
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142 "100-500": 0,
143 "500-2k": -29.525484906540118,
144 "2k-8k": -43.00313024471482
145 }
146 },
147 "gainDb": 20,
148 "peakDbfs": -5.605352756039195,
149 "run": {
150 "steps": 3072000,
151 "seconds": 38.265490640999985,
152 "nx": 39,
153 "ny": 58,
154 "dt": 0.0000013020833333333333,
155 "maxContactForce": 0
156 }
157 }
158 ]
159}