1{
2 "sweep": {
3 "id": "strike-speed",
4 "title": "Drumstick: stick speed",
5 "text": "A wooden stick tip (30 g effective mass) strikes the sheet at 70 percent of its width and 35 percent of its height. Speed sets both the loudness and the character: the contact force grows with speed, the contact shortens, and more energy reaches the high modes. In these clips the peak level rises from about 87 dB at 0.5 m/s to 109 dB at 6 m/s, and the spectral centroid from about 190 Hz to 1.6 kHz, so the sound grows brighter as well as louder.",
6 "base": {
7 "excitation": "strike"
8 },
9 "param": "strikeVelocity",
10 "unit": "m/s",
11 "values": [
12 0.5,
13 1,
14 2,
15 3,
16 4.5,
17 6
18 ]
19 },
20 "gainDb": 20,
21 "clips": [
22 {
23 "id": "strike-speed-0",
24 "label": "0.5 m/s",
25 "overrides": {
26 "excitation": "strike",
27 "strikeVelocity": 0.5
28 },
29 "metrics": {
30 "peakPa": 0.43459221720695496,
31 "peakDbSpl": 86.74103897858083,
32 "rmsPa": 0.0017211996547387086,
33 "centroidHz": 191.74383464724386,
34 "t60": {
35 "20-100": 5.446557913757056,
36 "100-500": 4.801638399885633,
37 "500-2k": 2.6413416695180354,
38 "2k-8k": 8.607039276935959
39 },
40 "bandLevelsDb": {
41 "20-100": 0.6395713715600486,
42 "100-500": 0,
43 "500-2k": -4.119906338555708,
44 "2k-8k": -3.061766775250419
45 }
46 },
47 "gainDb": 20,
48 "peakDbfs": 12.761638891860464,
49 "run": {
50 "steps": 3072000,
51 "seconds": 33.850307085,
52 "nx": 39,
53 "ny": 58,
54 "dt": 0.0000013020833333333333,
55 "maxContactForce": 27.765361785888672
56 }
57 },
58 {
59 "id": "strike-speed-1",
60 "label": "1 m/s",
61 "overrides": {
62 "excitation": "strike",
63 "strikeVelocity": 1
64 },
65 "metrics": {
66 "peakPa": 0.8907473087310791,
67 "peakDbSpl": 92.9744904640154,
68 "rmsPa": 0.0035625008265254025,
69 "centroidHz": 258.55378477903565,
70 "t60": {
71 "20-100": 5.5031943833771635,
72 "100-500": 4.805513418161642,
73 "500-2k": 2.6819751286832583,
74 "2k-8k": 6.778760291169417
75 },
76 "bandLevelsDb": {
77 "20-100": -1.140648145036966,
78 "100-500": 0,
79 "500-2k": -2.1308367788761977,
80 "2k-8k": -1.9176456254005494
81 }
82 },
83 "gainDb": 20,
84 "peakDbfs": 18.99509037729503,
85 "run": {
86 "steps": 3072000,
87 "seconds": 33.287663437999996,
88 "nx": 39,
89 "ny": 58,
90 "dt": 0.0000013020833333333333,
91 "maxContactForce": 57.9076042175293
92 }
93 },
94 {
95 "id": "strike-speed-2",
96 "label": "2 m/s",
97 "overrides": {
98 "excitation": "strike",
99 "strikeVelocity": 2
100 },
101 "metrics": {
102 "peakPa": 1.6756592988967896,
103 "peakDbSpl": 98.46311450565526,
104 "rmsPa": 0.007318886717729791,
105 "centroidHz": 317.1675130145372,
106 "t60": {
107 "20-100": 5.608790184501733,
108 "100-500": 3.911607544564089,
109 "500-2k": 2.7249400399883403,
110 "2k-8k": 5.138447429067539
111 },
112 "bandLevelsDb": {
113 "20-100": 0.7871305306760057,
114 "100-500": 0,
115 "500-2k": -2.1029443487004364,
116 "2k-8k": -1.7173315639980267
117 }
118 },
119 "gainDb": 20,
120 "peakDbfs": 24.483714418934884,
121 "run": {
122 "steps": 3072000,
123 "seconds": 33.824921243,
124 "nx": 39,
125 "ny": 58,
126 "dt": 0.0000013020833333333333,
127 "maxContactForce": 123.81974792480469
128 }
129 },
130 {
131 "id": "strike-speed-3",
132 "label": "3 m/s",
133 "overrides": {
134 "excitation": "strike",
135 "strikeVelocity": 3
136 },
137 "metrics": {
138 "peakPa": 2.552067756652832,
139 "peakDbSpl": 102.11724409859474,
140 "rmsPa": 0.010939866293578663,
141 "centroidHz": 654.5269112833041,
142 "t60": {
143 "20-100": 5.084050764268366,
144 "100-500": 4.166515631486475,
145 "500-2k": 2.5109722913953734,
146 "2k-8k": 4.596561207548714
147 },
148 "bandLevelsDb": {
149 "20-100": -10.075329770223362,
150 "100-500": 0,
151 "500-2k": 1.0910838167922776,
152 "2k-8k": -0.46759244010335266
153 }
154 },
155 "gainDb": 20,
156 "peakDbfs": 28.13784401187437,
157 "run": {
158 "steps": 3072000,
159 "seconds": 33.296314466000005,
160 "nx": 39,
161 "ny": 58,
162 "dt": 0.0000013020833333333333,
163 "maxContactForce": 195.15817260742188
164 }
165 },
166 {
167 "id": "strike-speed-4",
168 "label": "4.5 m/s",
169 "overrides": {
170 "excitation": "strike",
171 "strikeVelocity": 4.5
172 },
173 "metrics": {
174 "peakPa": 4.113951206207275,
175 "peakDbSpl": 106.26458281493191,
176 "rmsPa": 0.01715574480736511,
177 "centroidHz": 677.6315329645669,
178 "t60": {
179 "20-100": 5.502498829296282,
180 "100-500": 4.388497979531569,
181 "500-2k": 2.338084564908827,
182 "2k-8k": 3.7750965121607067
183 },
184 "bandLevelsDb": {
185 "20-100": -7.147407664025664,
186 "100-500": 0,
187 "500-2k": 1.080314164091373,
188 "2k-8k": 1.6809145433107808
189 }
190 },
191 "gainDb": 20,
192 "peakDbfs": 32.285182728211545,
193 "run": {
194 "steps": 3072000,
195 "seconds": 33.245039617,
196 "nx": 39,
197 "ny": 58,
198 "dt": 0.0000013020833333333333,
199 "maxContactForce": 314.9634094238281
200 }
201 },
202 {
203 "id": "strike-speed-5",
204 "label": "6 m/s",
205 "overrides": {
206 "excitation": "strike",
207 "strikeVelocity": 6
208 },
209 "metrics": {
210 "peakPa": 5.720595359802246,
211 "peakDbSpl": 109.12822467664293,
212 "rmsPa": 0.024899009413126484,
213 "centroidHz": 1653.8688047495991,
214 "t60": {
215 "20-100": 5.020709078258382,
216 "100-500": 3.9053748577582468,
217 "500-2k": 2.6837869685198537,
218 "2k-8k": 3.4194727548970922
219 },
220 "bandLevelsDb": {
221 "20-100": -5.000270105230513,
222 "100-500": 0,
223 "500-2k": 2.7155289492253765,
224 "2k-8k": 5.550089453315572
225 }
226 },
227 "gainDb": 20,
228 "peakDbfs": 35.14882458992257,
229 "run": {
230 "steps": 3072000,
231 "seconds": 33.292665719,
232 "nx": 39,
233 "ny": 58,
234 "dt": 0.0000013020833333333333,
235 "maxContactForce": 448.1610107421875
236 }
237 }
238 ]
239}