1{
2 "sweep": {
3 "id": "size-strike",
4 "title": "Sheet: size (drumstick strike)",
5 "text": "The same sweep excited by the default drumstick strike (30 g at 3 m/s) instead of the corner push. Struck, the larger sheets are louder and lower, the 18 by 24 inch sheet reaching about 105 dB at its peak against 100 dB for the smallest; the 24 by 36 inch sheet again puts much of its energy below 100 Hz.",
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 "base": {
34 "excitation": "strike"
35 }
36 },
37 "gainDb": 20,
38 "clips": [
39 {
40 "id": "size-strike-0",
41 "label": "8 x 12 in",
42 "overrides": {
43 "excitation": "strike",
44 "Lx": 0.2032,
45 "Ly": 0.3048
46 },
47 "metrics": {
48 "peakPa": 1.9556434154510498,
49 "peakDbSpl": 99.80519348818945,
50 "rmsPa": 0.008762376567504985,
51 "centroidHz": 968.4437957498149,
52 "t60": {
53 "20-100": 4.4649969105661205,
54 "100-500": 4.367403702856955,
55 "500-2k": 2.7974530050266697,
56 "2k-8k": 4.712212127967355
57 },
58 "bandLevelsDb": {
59 "20-100": -19.034409106916645,
60 "100-500": 0,
61 "500-2k": 4.699625864520701,
62 "2k-8k": 2.156434114660744
63 }
64 },
65 "gainDb": 20,
66 "peakDbfs": 25.825793401469078,
67 "run": {
68 "steps": 3072000,
69 "seconds": 32.220733495000054,
70 "nx": 26,
71 "ny": 39,
72 "dt": 0.0000013020833333333333,
73 "maxContactForce": 196.17713928222656
74 }
75 },
76 {
77 "id": "size-strike-1",
78 "label": "12 x 18 in (default)",
79 "overrides": {
80 "excitation": "strike"
81 },
82 "metrics": {
83 "peakPa": 2.552067756652832,
84 "peakDbSpl": 102.11724409859474,
85 "rmsPa": 0.010939866293578663,
86 "centroidHz": 654.5269112833041,
87 "t60": {
88 "20-100": 5.084050764268366,
89 "100-500": 4.166515631486475,
90 "500-2k": 2.5109722913953734,
91 "2k-8k": 4.596561207548714
92 },
93 "bandLevelsDb": {
94 "20-100": -10.075329770223362,
95 "100-500": 0,
96 "500-2k": 1.0910838167922776,
97 "2k-8k": -0.46759244010335266
98 }
99 },
100 "gainDb": 20,
101 "peakDbfs": 28.13784401187437,
102 "run": {
103 "steps": 3072000,
104 "seconds": 33.243308318000054,
105 "nx": 39,
106 "ny": 58,
107 "dt": 0.0000013020833333333333,
108 "maxContactForce": 195.15817260742188
109 }
110 },
111 {
112 "id": "size-strike-2",
113 "label": "18 x 24 in",
114 "overrides": {
115 "excitation": "strike",
116 "Lx": 0.4572,
117 "Ly": 0.6096
118 },
119 "metrics": {
120 "peakPa": 3.581892967224121,
121 "peakDbSpl": 105.06165217237736,
122 "rmsPa": 0.014363691787841562,
123 "centroidHz": 397.3706867731414,
124 "t60": {
125 "20-100": 5.5293272613072695,
126 "100-500": 3.84839147639922,
127 "500-2k": 2.3495878029637574,
128 "2k-8k": 4.641023960723582
129 },
130 "bandLevelsDb": {
131 "20-100": 2.6844566139857093,
132 "100-500": 0,
133 "500-2k": -0.4987665619395898,
134 "2k-8k": 1.7414206414528977
135 }
136 },
137 "gainDb": 20,
138 "peakDbfs": 31.08225208565699,
139 "run": {
140 "steps": 3072000,
141 "seconds": 34.743564855,
142 "nx": 58,
143 "ny": 77,
144 "dt": 0.0000013020833333333333,
145 "maxContactForce": 195.3292999267578
146 }
147 },
148 {
149 "id": "size-strike-3",
150 "label": "24 x 36 in",
151 "overrides": {
152 "excitation": "strike",
153 "Lx": 0.6096,
154 "Ly": 0.9144
155 },
156 "metrics": {
157 "peakPa": 2.8233301639556885,
158 "peakDbSpl": 102.99463344845252,
159 "rmsPa": 0.01740417690065612,
160 "centroidHz": 452.72786698249456,
161 "t60": {
162 "20-100": 5.5935101104065,
163 "100-500": 3.855883646949638,
164 "500-2k": 2.3516357659170986,
165 "2k-8k": 4.50736574954075
166 },
167 "bandLevelsDb": {
168 "20-100": 2.318795153920661,
169 "100-500": 0,
170 "500-2k": 2.119229699001309,
171 "2k-8k": 1.945871641779231
172 }
173 },
174 "gainDb": 20,
175 "peakDbfs": 29.015233361732143,
176 "run": {
177 "steps": 3072000,
178 "seconds": 37.79189364699996,
179 "nx": 77,
180 "ny": 115,
181 "dt": 0.0000013020833333333333,
182 "maxContactForce": 167.1598663330078
183 }
184 }
185 ]
186}