threshhold (rms)   duration (s)

     0.000000000     0.061588041
     0.200000003     0.048547860
     0.400000006     0.039271079
     0.600000024     0.033362541
     0.800000012     0.029354518
     1.000000000     0.027341099
     1.200000048     0.026174448
     1.399999976     0.025534669
     1.600000024     0.024819624
     1.799999952     0.024010492
     2.000000000     0.022937924
     2.200000048     0.023013191
     2.400000095     0.023935223
     2.599999905     0.023182545
     2.799999952     0.023521250
     3.000000000     0.023728238