{ "sweep": { "id": "strike-speed", "title": "Drumstick: stick speed", "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. The sound grows brighter as well as louder.", "base": { "excitation": "strike" }, "param": "strikeVelocity", "unit": "m/s", "values": [ 0.5, 1, 2, 3, 4.5, 6 ] }, "gainDb": -10, "clips": [ { "id": "strike-speed-0", "label": "0.5 m/s", "overrides": { "excitation": "strike", "strikeVelocity": 0.5, "spacing": 0.004 }, "metrics": { "peakPa": 0.32989823818206787, "peakDbSpl": 84.34700001085253, "rmsPa": 0.0013752768866802387, "centroidHz": 211.35075889523384, "t60": { "20-100": 5.421595189026437, "100-500": 4.829842234560236, "500-2k": 2.584959790972203, "2k-8k": 7.753386829472608 }, "bandLevelsDb": { "20-100": 0.43503645593334284, "100-500": 0, "500-2k": -5.277500098983353, "2k-8k": -2.7251999649091854 } }, "gainDb": -10, "peakDbfs": -19.632400075867853, "run": { "steps": 6144000, "seconds": 62.09852399299999, "nx": 77, "ny": 115, "dt": 6.510416666666666e-7, "maxContactForce": 27.824155807495117 } }, { "id": "strike-speed-1", "label": "1 m/s", "overrides": { "excitation": "strike", "strikeVelocity": 1, "spacing": 0.004 }, "metrics": { "peakPa": 0.7198619842529297, "peakDbSpl": 91.12438487026358, "rmsPa": 0.002925910255742066, "centroidHz": 236.18250592388765, "t60": { "20-100": 5.320227447271335, "100-500": 4.771006973144124, "500-2k": 2.4780040581908356, "2k-8k": 6.072417631425333 }, "bandLevelsDb": { "20-100": -2.6954138963976675, "100-500": 0, "500-2k": -6.252126176052808, "2k-8k": -3.7111693800043906 } }, "gainDb": -10, "peakDbfs": -12.855015216456797, "run": { "steps": 6144000, "seconds": 61.601261146000006, "nx": 77, "ny": 115, "dt": 6.510416666666666e-7, "maxContactForce": 57.076847076416016 } }, { "id": "strike-speed-2", "label": "2 m/s", "overrides": { "excitation": "strike", "strikeVelocity": 2, "spacing": 0.004 }, "metrics": { "peakPa": 1.4831573963165283, "peakDbSpl": 97.40314492420696, "rmsPa": 0.0063310579870730676, "centroidHz": 219.54177547702503, "t60": { "20-100": 5.531767562097402, "100-500": 4.46948516550146, "500-2k": 2.398375013569001, "2k-8k": 4.846408972532886 }, "bandLevelsDb": { "20-100": -1.132559844659724, "100-500": 0, "500-2k": -2.2850845475978403, "2k-8k": -3.067700239340308 } }, "gainDb": -10, "peakDbfs": -6.576255162513417, "run": { "steps": 6144000, "seconds": 61.652156889999986, "nx": 77, "ny": 115, "dt": 6.510416666666666e-7, "maxContactForce": 117.44657135009766 } }, { "id": "strike-speed-3", "label": "3 m/s", "overrides": { "excitation": "strike", "strikeVelocity": 3, "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": -10, "peakDbfs": -3.1313644851465208, "run": { "steps": 6144000, "seconds": 61.56484928600001, "nx": 77, "ny": 115, "dt": 6.510416666666666e-7, "maxContactForce": 179.2267303466797 } }, { "id": "strike-speed-4", "label": "4.5 m/s", "overrides": { "excitation": "strike", "strikeVelocity": 4.5, "spacing": 0.004 }, "metrics": { "peakPa": 3.2714650630950928, "peakDbSpl": 104.27424582082, "rmsPa": 0.015204134411944873, "centroidHz": 785.7258882231057, "t60": { "20-100": 5.309500138060633, "100-500": 4.907877539400254, "500-2k": 2.46606147333142, "2k-8k": 3.458747776978249 }, "bandLevelsDb": { "20-100": -7.638003960332192, "100-500": 0, "500-2k": -0.24072680069535934, "2k-8k": 1.3345514920752777 } }, "gainDb": -10, "peakDbfs": 0.29484573409962195, "run": { "steps": 6144000, "seconds": 61.581769396999995, "nx": 77, "ny": 115, "dt": 6.510416666666666e-7, "maxContactForce": 274.3179931640625 } }, { "id": "strike-speed-5", "label": "6 m/s", "overrides": { "excitation": "strike", "strikeVelocity": 6, "spacing": 0.004 }, "metrics": { "peakPa": 4.558109760284424, "peakDbSpl": 107.15509566425658, "rmsPa": 0.022380536386267347, "centroidHz": 1578.454788876433, "t60": { "20-100": 4.823713519443493, "100-500": 4.471439813226143, "500-2k": 2.5290009859903333, "2k-8k": 3.195202801525849 }, "bandLevelsDb": { "20-100": -3.1385641591647087, "100-500": 0, "500-2k": 4.682382107396865, "2k-8k": 10.888707085094378 } }, "gainDb": -10, "peakDbfs": 3.175695577536199, "run": { "steps": 6144000, "seconds": 61.57575858599995, "nx": 77, "ny": 115, "dt": 6.510416666666666e-7, "maxContactForce": 371.9477844238281 } } ] }