Rod calculations for the robot Diapason : 442 Hz Material: hardened carbon steel note = midi note number f = frequency of the perceived pitch l_cal = calculated free length of the staves l_cut = length to cut from the rod material reference test rod: free length = 301 mm rod diameter = 4 mm Sounding midi note = 72 Frequency = 525 Hz Equal temperament table: N= 72 f = 525 l_cal= 301 l_eff= 313mm N= 73 f = 556 l_cal= 292.4311 l_eff= 304.4311mm N= 74 f = 589 l_cal= 284.1062 l_eff= 296.1062mm N= 75 f = 625 l_cal= 276.0182 l_eff= 288.0182mm N= 76 f = 662 l_cal= 268.1605 l_eff= 280.1605mm N= 77 f = 701 l_cal= 260.5265 l_eff= 272.5265mm N= 78 f = 743 l_cal= 253.1098 l_eff= 265.1098mm N= 79 f = 787 l_cal= 245.9043 l_eff= 257.9043mm N= 80 f = 834 l_cal= 238.9038 l_eff= 250.9038mm N= 81 f = 883 l_cal= 232.1027 l_eff= 244.1027mm N= 82 f = 936 l_cal= 225.4952 l_eff= 237.4952mm N= 83 f = 992 l_cal= 219.0758 l_eff= 231.0758mm N= 84 f = 1051 l_cal= 212.8391 l_eff= 224.8391mm N= 85 f = 1113 l_cal= 206.78 l_eff= 218.78mm N= 86 f = 1179 l_cal= 200.8934 l_eff= 212.8934mm N= 87 f = 1250 l_cal= 195.1743 l_eff= 207.1743mm N= 88 f = 1324 l_cal= 189.6181 l_eff= 201.6181mm N= 89 f = 1403 l_cal= 184.2201 l_eff= 196.2201mm N= 90 f = 1486 l_cal= 178.9757 l_eff= 190.9757mm N= 91 f = 1575 l_cal= 173.8806 l_eff= 185.8806mm N= 92 f = 1668 l_cal= 168.9305 l_eff= 180.9305mm N= 93 f = 1767 l_cal= 164.1214 l_eff= 176.1214mm N= 94 f = 1873 l_cal= 159.4492 l_eff= 171.4492mm N= 95 f = 1984 l_cal= 154.91 l_eff= 166.91mm N= 96 f = 2102 l_cal= 150.5 l_eff= 162.5mm N= 97 f = 2227 l_cal= 146.2156 l_eff= 158.2156mm N= 98 f = 2359 l_cal= 142.0531 l_eff= 154.0531mm N= 99 f = 2500 l_cal= 138.0091 l_eff= 150.0091mm N= 100 f = 2649 l_cal= 134.0803 l_eff= 146.0803mm N= 101 f = 2806 l_cal= 130.2632 l_eff= 142.2632mm N= 102 f = 2973 l_cal= 126.5549 l_eff= 138.5549mm N= 103 f = 3150 l_cal= 122.9521 l_eff= 134.9521mm N= 104 f = 3337 l_cal= 119.4519 l_eff= 131.4519mm N= 105 f = 3535 l_cal= 116.0514 l_eff= 128.0514mm N= 106 f = 3746 l_cal= 112.7476 l_eff= 124.7476mm N= 107 f = 3969 l_cal= 109.5379 l_eff= 121.5379mm N= 108 f = 4205 l_cal= 106.4196 l_eff= 118.4196mm