1{
2 "sweep": {
3 "id": "damping-sigma1",
4 "title": "Damping: frequency-dependent loss (push and release)",
5 "text": "sigma1 makes the high modes decay faster, in proportion to the square of their wavenumber; it stands mainly for radiation into the air. Too little and the highs ring like a cymbal; too much and the sheet sounds dull.",
6 "param": "sigma1",
7 "unit": "m^2/s",
8 "values": [
9 0.0001,
10 0.0005,
11 0.0025
12 ]
13 },
14 "gainDb": 20,
15 "clips": [
16 {
17 "id": "damping-sigma1-0",
18 "label": "0.0001 m^2/s",
19 "overrides": {
20 "sigma1": 0.0001
21 },
22 "metrics": {
23 "peakPa": 0.04691418260335922,
24 "peakDbSpl": 67.40548316501246,
25 "rmsPa": 0.0035708832810749293,
26 "centroidHz": 237.90907586295802,
27 "t60": {
28 "20-100": 6.085472082210507,
29 "100-500": 4.837753187568148,
30 "500-2k": 4.258740028254226,
31 "2k-8k": 4.198141516871227
32 },
33 "bandLevelsDb": {
34 "20-100": -0.9945588034804658,
35 "100-500": 0,
36 "500-2k": -6.261847837807029,
37 "2k-8k": -37.598817919659695
38 }
39 },
40 "gainDb": 20,
41 "peakDbfs": -6.5739169217079185,
42 "run": {
43 "steps": 3072000,
44 "seconds": 38.287865206999705,
45 "nx": 39,
46 "ny": 58,
47 "dt": 0.0000013020833333333333,
48 "maxContactForce": 0
49 }
50 },
51 {
52 "id": "damping-sigma1-1",
53 "label": "0.0005 m^2/s",
54 "overrides": {
55 "sigma1": 0.0005
56 },
57 "metrics": {
58 "peakPa": 0.04646482318639755,
59 "peakDbSpl": 67.32188586389826,
60 "rmsPa": 0.0033498771907116485,
61 "centroidHz": 195.7169225189091,
62 "t60": {
63 "20-100": 5.414347622298749,
64 "100-500": 4.0120593180726445,
65 "500-2k": 2.724403865668108,
66 "2k-8k": 7.678595678417119
67 },
68 "bandLevelsDb": {
69 "20-100": -1.153481711330091,
70 "100-500": 0,
71 "500-2k": -6.774905483785499,
72 "2k-8k": -41.19767338483816
73 }
74 },
75 "gainDb": 20,
76 "peakDbfs": -6.657514222822115,
77 "run": {
78 "steps": 3072000,
79 "seconds": 38.28338712599967,
80 "nx": 39,
81 "ny": 58,
82 "dt": 0.0000013020833333333333,
83 "maxContactForce": 0
84 }
85 },
86 {
87 "id": "damping-sigma1-2",
88 "label": "0.0025 m^2/s",
89 "overrides": {
90 "sigma1": 0.0025
91 },
92 "metrics": {
93 "peakPa": 0.04596929997205734,
94 "peakDbSpl": 67.22875789259997,
95 "rmsPa": 0.0029357823845749683,
96 "centroidHz": 117.50217504465688,
97 "t60": {
98 "20-100": 3.9916123934822054,
99 "100-500": 2.8760926367661677,
100 "500-2k": 2.372780742982254,
101 "2k-8k": 23.248409238439763
102 },
103 "bandLevelsDb": {
104 "20-100": -2.0954683752970986,
105 "100-500": 0,
106 "500-2k": -9.412100421926278,
107 "2k-8k": -56.50622857149351
108 }
109 },
110 "gainDb": 20,
111 "peakDbfs": -6.750642194120404,
112 "run": {
113 "steps": 3072000,
114 "seconds": 38.24263662500027,
115 "nx": 39,
116 "ny": 58,
117 "dt": 0.0000013020833333333333,
118 "maxContactForce": 0
119 }
120 }
121 ]
122}