threshhold (rms)  duration (s)

     0.000000000     0.007840206
     0.200000003     0.005797710
     0.400000006     0.004551882
     0.600000024     0.003876960
     0.800000012     0.003445530
     1.000000000     0.003192582
     1.200000048     0.002965638
     1.399999976     0.002794248
     1.600000024     0.002652408
     1.799999952     0.002531844
     2.000000000     0.002401824
     2.200000048     0.002272986
     2.400000095     0.002217432
     2.599999905     0.002203248
     2.799999952     0.002163060
     3.000000000     0.002083866