1{
2 "sweep": {
3 "id": "size",
4 "title": "Sheet: size (push and release)",
5 "text": "Plate dimensions (width by height) at the same thickness. Mode frequencies scale with the inverse square of the size, so a larger sheet is lower and slower, and under the same 10 mm push it also stores less energy and sounds quieter. The 24 by 36 inch sheet is an extreme case: its lowest modes lie near 10 Hz, below hearing, and most of its peak pressure is this infrasound, so it sounds much fainter than its sound pressure level suggests.",
6 "clips": [
7 {
8 "label": "8 x 12 in",
9 "params": {
10 "Lx": 0.2032,
11 "Ly": 0.3048
12 }
13 },
14 {
15 "label": "12 x 18 in (default)",
16 "params": {}
17 },
18 {
19 "label": "18 x 24 in",
20 "params": {
21 "Lx": 0.4572,
22 "Ly": 0.6096
23 }
24 },
25 {
26 "label": "24 x 36 in",
27 "params": {
28 "Lx": 0.6096,
29 "Ly": 0.9144
30 }
31 }
32 ]
33 },
34 "gainDb": 20,
35 "clips": [
36 {
37 "id": "size-0",
38 "label": "8 x 12 in",
39 "overrides": {
40 "Lx": 0.2032,
41 "Ly": 0.3048
42 },
43 "metrics": {
44 "peakPa": 0.06421922892332077,
45 "peakDbSpl": 70.1327018209665,
46 "rmsPa": 0.0036191031731183723,
47 "centroidHz": 299.64193921549156,
48 "t60": {
49 "20-100": 4.346948517507047,
50 "100-500": 4.424210355044337,
51 "500-2k": 2.739925934200017,
52 "2k-8k": 6.492776611058871
53 },
54 "bandLevelsDb": {
55 "20-100": -15.906993799804223,
56 "100-500": 0,
57 "500-2k": -7.329099751745332,
58 "2k-8k": -25.330202165652075
59 }
60 },
61 "gainDb": 20,
62 "peakDbfs": -3.8466982657538615,
63 "run": {
64 "steps": 3072000,
65 "seconds": 36.694463224999836,
66 "nx": 26,
67 "ny": 39,
68 "dt": 0.0000013020833333333333,
69 "maxContactForce": 0
70 }
71 },
72 {
73 "id": "size-1",
74 "label": "12 x 18 in (default)",
75 "overrides": {},
76 "metrics": {
77 "peakPa": 0.04646482318639755,
78 "peakDbSpl": 67.32188586389826,
79 "rmsPa": 0.0033498771907116485,
80 "centroidHz": 195.7169225189091,
81 "t60": {
82 "20-100": 5.414347622298749,
83 "100-500": 4.0120593180726445,
84 "500-2k": 2.724403865668108,
85 "2k-8k": 7.678595678417119
86 },
87 "bandLevelsDb": {
88 "20-100": -1.153481711330091,
89 "100-500": 0,
90 "500-2k": -6.774905483785499,
91 "2k-8k": -41.19767338483816
92 }
93 },
94 "gainDb": 20,
95 "peakDbfs": -6.657514222822115,
96 "run": {
97 "steps": 3072000,
98 "seconds": 38.239591902999905,
99 "nx": 39,
100 "ny": 58,
101 "dt": 0.0000013020833333333333,
102 "maxContactForce": 0
103 }
104 },
105 {
106 "id": "size-2",
107 "label": "18 x 24 in",
108 "overrides": {
109 "Lx": 0.4572,
110 "Ly": 0.6096
111 },
112 "metrics": {
113 "peakPa": 0.028950326144695282,
114 "peakDbSpl": 63.212469300869344,
115 "rmsPa": 0.0022534872667671294,
116 "centroidHz": 122.12395952474397,
117 "t60": {
118 "20-100": 5.149722319264555,
119 "100-500": 4.069609538323575,
120 "500-2k": 2.550072167901959,
121 "2k-8k": 7.337480492407415
122 },
123 "bandLevelsDb": {
124 "20-100": 7.947559427523743,
125 "100-500": 0,
126 "500-2k": -20.521442114252682,
127 "2k-8k": -37.471378494119236
128 }
129 },
130 "gainDb": 20,
131 "peakDbfs": -10.76693078585103,
132 "run": {
133 "steps": 3072000,
134 "seconds": 40.36680082300003,
135 "nx": 58,
136 "ny": 77,
137 "dt": 0.0000013020833333333333,
138 "maxContactForce": 0
139 }
140 },
141 {
142 "id": "size-3",
143 "label": "24 x 36 in",
144 "overrides": {
145 "Lx": 0.6096,
146 "Ly": 0.9144
147 },
148 "metrics": {
149 "peakPa": 0.2559710144996643,
150 "peakDbSpl": 82.14321588080469,
151 "rmsPa": 0.0021916269314661684,
152 "centroidHz": 532.3725095271293,
153 "t60": {
154 "20-100": 4.9735527425503445,
155 "100-500": 4.171193266572809,
156 "500-2k": 4.718100357823921,
157 "2k-8k": 6.246302875574128
158 },
159 "bandLevelsDb": {
160 "20-100": 18.07003854092374,
161 "100-500": 0,
162 "500-2k": -44.21767621278057,
163 "2k-8k": -12.44033342489616
164 }
165 },
166 "gainDb": 20,
167 "peakDbfs": 8.163815794084316,
168 "run": {
169 "steps": 3072000,
170 "seconds": 43.87599745299993,
171 "nx": 77,
172 "ny": 115,
173 "dt": 0.0000013020833333333333,
174 "maxContactForce": 0
175 }
176 }
177 ]
178}