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gen~.centroid.maxpat
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gen~.centroid.maxpat
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"code" : "History last(0.);\r\nHistory sum_energy(0.);\r\nHistory sum_energy_index(0.);\r\n\r\nreal = in1;\r\nimag = in2;\r\nindex = in3;\r\nenergy = real * real + imag * imag;\t// you could sqrt that if you want to take the amplitude...\r\nval = last;\t// the value we send out\r\n\r\nif (index < (VECTORSIZE-1)) {\r\n\t// accumulate while the index is below (vectorsize - 1)\r\n\tsum_energy += energy;\r\n\tsum_energy_index += energy * index;\r\n} else {\r\n\t// we now have a full frame; recalculate val:\r\n\tval = (sum_energy_index / sum_energy);\r\n\tval *= SAMPLERATE / FFTSIZE;\r\n\tval *= FFTHOP / VECTORSIZE;\r\n\t\r\n\tsum_energy = 0.;\r\n\tsum_energy_index = 0.;\r\n\t\r\n\t// store new centroid for next sample\r\n\tlast = val;\r\n}\r\n\r\nout = val;",
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"text" : "in 3"
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