The units menu on the right of many CHOP parameters lets you specify the parameter in the following ways:

  • Index (the sample number in the CHOP, starting at 0, even for time slices)
  • Frames (index = global frames per second * parameter value). global fps is default 60.
  • Seconds (index = CHOP sample rate * parameter value)

Units are treated more extensively in the Animation component to include user-defined units.