{
  "sweep": {
    "id": "strike-stiffness",
    "title": "Drumstick: tip hardness",
    "text": "The Hertz contact stiffness K stands for the hardness of the tip: a soft (rubber or felt) tip has a low K and a long, gentle contact that excites mainly the low modes; a hard tip (dense wood, or a metal beater) has a high K and a sharp click.",
    "base": {
      "excitation": "strike"
    },
    "param": "contactStiffness",
    "unit": "N/m^1.5",
    "values": [
      5000000,
      50000000,
      500000000,
      5000000000
    ]
  },
  "gainDb": 20,
  "clips": [
    {
      "id": "strike-stiffness-0",
      "label": "5000000 N/m^1.5",
      "overrides": {
        "excitation": "strike",
        "contactStiffness": 5000000
      },
      "metrics": {
        "peakPa": 0.3804190754890442,
        "peakDbSpl": 85.58464580260228,
        "rmsPa": 0.005133101743062823,
        "centroidHz": 374.5739194810616,
        "t60": {
          "20-100": 5.682845037338983,
          "100-500": 4.389427244465509,
          "500-2k": 2.5182583805850713,
          "2k-8k": 4.680011457217637
        },
        "bandLevelsDb": {
          "20-100": -7.648029582701312,
          "100-500": 0,
          "500-2k": 0.2754585609741902,
          "2k-8k": -13.075716061300339
        }
      },
      "gainDb": 20,
      "peakDbfs": 11.605245715881907,
      "run": {
        "steps": 3072000,
        "seconds": 33.748852703,
        "nx": 39,
        "ny": 58,
        "dt": 0.0000013020833333333333,
        "maxContactForce": 112.61978912353516
      }
    },
    {
      "id": "strike-stiffness-1",
      "label": "50000000 N/m^1.5",
      "overrides": {
        "excitation": "strike",
        "contactStiffness": 50000000
      },
      "metrics": {
        "peakPa": 1.4359854459762573,
        "peakDbSpl": 97.12240085191797,
        "rmsPa": 0.00793854978704168,
        "centroidHz": 677.3112252388133,
        "t60": {
          "20-100": 5.78500064678424,
          "100-500": 4.048410604767264,
          "500-2k": 2.484841151409641,
          "2k-8k": 4.4317011614592925
        },
        "bandLevelsDb": {
          "20-100": -6.860859620797564,
          "100-500": 0,
          "500-2k": 3.7173941121677316,
          "2k-8k": -2.0785887087875885
        }
      },
      "gainDb": 20,
      "peakDbfs": 23.14300076519761,
      "run": {
        "steps": 3072000,
        "seconds": 33.219109988999996,
        "nx": 39,
        "ny": 58,
        "dt": 0.0000013020833333333333,
        "maxContactForce": 147.958984375
      }
    },
    {
      "id": "strike-stiffness-2",
      "label": "500000000 N/m^1.5",
      "overrides": {
        "excitation": "strike",
        "contactStiffness": 500000000
      },
      "metrics": {
        "peakPa": 2.552067756652832,
        "peakDbSpl": 102.11724409859474,
        "rmsPa": 0.010939866293578663,
        "centroidHz": 654.5269112833041,
        "t60": {
          "20-100": 5.084050764268366,
          "100-500": 4.166515631486475,
          "500-2k": 2.5109722913953734,
          "2k-8k": 4.596561207548714
        },
        "bandLevelsDb": {
          "20-100": -10.075329770223362,
          "100-500": 0,
          "500-2k": 1.0910838167922776,
          "2k-8k": -0.46759244010335266
        }
      },
      "gainDb": 20,
      "peakDbfs": 28.13784401187437,
      "run": {
        "steps": 3072000,
        "seconds": 33.269960833000006,
        "nx": 39,
        "ny": 58,
        "dt": 0.0000013020833333333333,
        "maxContactForce": 195.15817260742188
      }
    },
    {
      "id": "strike-stiffness-3",
      "label": "5000000000 N/m^1.5",
      "overrides": {
        "excitation": "strike",
        "contactStiffness": 5000000000
      },
      "metrics": {
        "peakPa": 3.4693288803100586,
        "peakDbSpl": 104.78430951471587,
        "rmsPa": 0.015459878623562228,
        "centroidHz": 562.5916770763948,
        "t60": {
          "20-100": 5.3772205987130315,
          "100-500": 3.822684139794704,
          "500-2k": 2.452117016164148,
          "2k-8k": 4.458082216505916
        },
        "bandLevelsDb": {
          "20-100": -9.102431932379966,
          "100-500": 0,
          "500-2k": 1.1269940318410363,
          "2k-8k": -0.4054748933325456
        }
      },
      "gainDb": 20,
      "peakDbfs": 30.804909427995504,
      "run": {
        "steps": 3072000,
        "seconds": 33.254065699000016,
        "nx": 39,
        "ny": 58,
        "dt": 0.0000013020833333333333,
        "maxContactForce": 532.1395874023438
      }
    }
  ]
}