{
  "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": -6,
  "clips": [
    {
      "id": "strike-stiffness-0",
      "label": "5000000 N/m^1.5",
      "overrides": {
        "excitation": "strike",
        "contactStiffness": 5000000,
        "spacing": 0.004
      },
      "metrics": {
        "peakPa": 0.26147589087486267,
        "peakDbSpl": 82.32803311386806,
        "rmsPa": 0.004232388183234962,
        "centroidHz": 404.3643280006084,
        "t60": {
          "20-100": 5.757894846130037,
          "100-500": 4.352052842426992,
          "500-2k": 2.55615996294041,
          "2k-8k": 4.318042557827629
        },
        "bandLevelsDb": {
          "20-100": -9.964902271720613,
          "100-500": 0,
          "500-2k": 0.13898452411637408,
          "2k-8k": -10.977715328278927
        }
      },
      "gainDb": -6,
      "peakDbfs": -17.651366972852305,
      "run": {
        "steps": 6144000,
        "seconds": 62.01993563700002,
        "nx": 77,
        "ny": 115,
        "dt": 6.510416666666666e-7,
        "maxContactForce": 112.884765625
      }
    },
    {
      "id": "strike-stiffness-1",
      "label": "50000000 N/m^1.5",
      "overrides": {
        "excitation": "strike",
        "contactStiffness": 50000000,
        "spacing": 0.004
      },
      "metrics": {
        "peakPa": 1.0846350193023682,
        "peakDbSpl": 94.68507253208466,
        "rmsPa": 0.006363170396865752,
        "centroidHz": 381.31414345875294,
        "t60": {
          "20-100": 5.280974643647922,
          "100-500": 4.6467158809535976,
          "500-2k": 2.334056839108303,
          "2k-8k": 4.084407377811061
        },
        "bandLevelsDb": {
          "20-100": -6.5733765284632995,
          "100-500": 0,
          "500-2k": 0.7208944687813243,
          "2k-8k": -3.989663805043616
        }
      },
      "gainDb": -6,
      "peakDbfs": -5.294327554635715,
      "run": {
        "steps": 6144000,
        "seconds": 62.09568580800004,
        "nx": 77,
        "ny": 115,
        "dt": 6.510416666666666e-7,
        "maxContactForce": 149.91244506835938
      }
    },
    {
      "id": "strike-stiffness-2",
      "label": "500000000 N/m^1.5",
      "overrides": {
        "excitation": "strike",
        "contactStiffness": 500000000,
        "spacing": 0.004
      },
      "metrics": {
        "peakPa": 2.205117702484131,
        "peakDbSpl": 100.84803560157386,
        "rmsPa": 0.00951895798535143,
        "centroidHz": 435.21529790921534,
        "t60": {
          "20-100": 5.627390472686013,
          "100-500": 4.5707678921683526,
          "500-2k": 2.5907910666908407,
          "2k-8k": 3.9744633879876843
        },
        "bandLevelsDb": {
          "20-100": -1.3514353071700143,
          "100-500": 0,
          "500-2k": 1.187547735231874,
          "2k-8k": 1.994130612116379
        }
      },
      "gainDb": -6,
      "peakDbfs": 0.8686355148534772,
      "run": {
        "steps": 6144000,
        "seconds": 62.016054563999994,
        "nx": 77,
        "ny": 115,
        "dt": 6.510416666666666e-7,
        "maxContactForce": 179.2267303466797
      }
    },
    {
      "id": "strike-stiffness-3",
      "label": "5000000000 N/m^1.5",
      "overrides": {
        "excitation": "strike",
        "contactStiffness": 5000000000,
        "spacing": 0.004
      },
      "metrics": {
        "peakPa": 2.799502372741699,
        "peakDbSpl": 102.92101688514211,
        "rmsPa": 0.010296969727946671,
        "centroidHz": 462.5488108949825,
        "t60": {
          "20-100": 5.530095833056142,
          "100-500": 4.8387802324309686,
          "500-2k": 2.51660172043016,
          "2k-8k": 4.128108170089937
        },
        "bandLevelsDb": {
          "20-100": -1.642638730080165,
          "100-500": 0,
          "500-2k": 1.0920924916927817,
          "2k-8k": 2.0863083221425214
        }
      },
      "gainDb": -6,
      "peakDbfs": 2.9416167984217316,
      "run": {
        "steps": 6144000,
        "seconds": 61.991915126000066,
        "nx": 77,
        "ny": 115,
        "dt": 6.510416666666666e-7,
        "maxContactForce": 354.15325927734375
      }
    }
  ]
}