1{
2 "sweep": {
3 "id": "strike-position",
4 "title": "Drumstick: strike position",
5 "text": "Where the sheet is struck decides which modes are excited: a strike at the center excites only modes that are symmetric about both axes, while a strike near an edge or a corner excites the twisting and edge modes as well. The central strike is the loudest and the lowest of the four, since it drives the low symmetric modes that radiate best; the off-center default is the brightest.",
6 "base": {
7 "excitation": "strike"
8 },
9 "clips": [
10 {
11 "label": "center",
12 "params": {
13 "strikeFracX": 0.5,
14 "strikeFracY": 0.5
15 }
16 },
17 {
18 "label": "off-center (default)",
19 "params": {
20 "strikeFracX": 0.7,
21 "strikeFracY": 0.35
22 }
23 },
24 {
25 "label": "near the right edge",
26 "params": {
27 "strikeFracX": 0.95,
28 "strikeFracY": 0.5
29 }
30 },
31 {
32 "label": "near a corner",
33 "params": {
34 "strikeFracX": 0.92,
35 "strikeFracY": 0.08
36 }
37 }
38 ]
39 },
40 "gainDb": 20,
41 "clips": [
42 {
43 "id": "strike-position-0",
44 "label": "center",
45 "overrides": {
46 "excitation": "strike",
47 "strikeFracX": 0.5,
48 "strikeFracY": 0.5
49 },
50 "metrics": {
51 "peakPa": 4.090140342712402,
52 "peakDbSpl": 106.21416428608427,
53 "rmsPa": 0.017414943497971586,
54 "centroidHz": 449.3720005711135,
55 "t60": {
56 "20-100": 5.507011553639136,
57 "100-500": 4.742222884858844,
58 "500-2k": 2.4498227913617256,
59 "2k-8k": 3.8812279635413325
60 },
61 "bandLevelsDb": {
62 "20-100": -8.242444869098549,
63 "100-500": 0,
64 "500-2k": -1.3819603260077429,
65 "2k-8k": -2.7869660531175313
66 }
67 },
68 "gainDb": 20,
69 "peakDbfs": 32.23476419936389,
70 "run": {
71 "steps": 3072000,
72 "seconds": 33.197286171000016,
73 "nx": 39,
74 "ny": 58,
75 "dt": 0.0000013020833333333333,
76 "maxContactForce": 194.9879608154297
77 }
78 },
79 {
80 "id": "strike-position-1",
81 "label": "off-center (default)",
82 "overrides": {
83 "excitation": "strike",
84 "strikeFracX": 0.7,
85 "strikeFracY": 0.35
86 },
87 "metrics": {
88 "peakPa": 2.552067756652832,
89 "peakDbSpl": 102.11724409859474,
90 "rmsPa": 0.010939866293578663,
91 "centroidHz": 654.5269112833041,
92 "t60": {
93 "20-100": 5.084050764268366,
94 "100-500": 4.166515631486475,
95 "500-2k": 2.5109722913953734,
96 "2k-8k": 4.596561207548714
97 },
98 "bandLevelsDb": {
99 "20-100": -10.075329770223362,
100 "100-500": 0,
101 "500-2k": 1.0910838167922776,
102 "2k-8k": -0.46759244010335266
103 }
104 },
105 "gainDb": 20,
106 "peakDbfs": 28.13784401187437,
107 "run": {
108 "steps": 3072000,
109 "seconds": 33.08529265699998,
110 "nx": 39,
111 "ny": 58,
112 "dt": 0.0000013020833333333333,
113 "maxContactForce": 195.15817260742188
114 }
115 },
116 {
117 "id": "strike-position-2",
118 "label": "near the right edge",
119 "overrides": {
120 "excitation": "strike",
121 "strikeFracX": 0.95,
122 "strikeFracY": 0.5
123 },
124 "metrics": {
125 "peakPa": 2.0260727405548096,
126 "peakDbSpl": 100.1125007557196,
127 "rmsPa": 0.009846177464463899,
128 "centroidHz": 457.3865316122065,
129 "t60": {
130 "20-100": 5.380793195966296,
131 "100-500": 4.249767131031015,
132 "500-2k": 2.422769592299953,
133 "2k-8k": 4.487254634529499
134 },
135 "bandLevelsDb": {
136 "20-100": -5.746870054845811,
137 "100-500": 0,
138 "500-2k": -0.9576882448219131,
139 "2k-8k": -2.190169031270461
140 }
141 },
142 "gainDb": 20,
143 "peakDbfs": 26.13310066899922,
144 "run": {
145 "steps": 3072000,
146 "seconds": 33.18327378399999,
147 "nx": 39,
148 "ny": 58,
149 "dt": 0.0000013020833333333333,
150 "maxContactForce": 190.2689208984375
151 }
152 },
153 {
154 "id": "strike-position-3",
155 "label": "near a corner",
156 "overrides": {
157 "excitation": "strike",
158 "strikeFracX": 0.92,
159 "strikeFracY": 0.08
160 },
161 "metrics": {
162 "peakPa": 2.6406617164611816,
163 "peakDbSpl": 102.41365547106997,
164 "rmsPa": 0.012986906324117349,
165 "centroidHz": 539.8610576204195,
166 "t60": {
167 "20-100": 5.031269853074107,
168 "100-500": 4.657374851267341,
169 "500-2k": 2.6397616245726754,
170 "2k-8k": 4.413791387848751
171 },
172 "bandLevelsDb": {
173 "20-100": -7.612234909855623,
174 "100-500": 0,
175 "500-2k": -0.5897316266875166,
176 "2k-8k": -1.4461924028059059
177 }
178 },
179 "gainDb": 20,
180 "peakDbfs": 28.4342553843496,
181 "run": {
182 "steps": 3072000,
183 "seconds": 33.160981005999986,
184 "nx": 39,
185 "ny": 58,
186 "dt": 0.0000013020833333333333,
187 "maxContactForce": 196.79904174804688
188 }
189 }
190 ]
191}