1. capture rate: 
  120 fps(frame per second)
2. data format:
  1) .amc file could be viewed as animation by 
    http://graphics.cs.cmu.edu/software/asfamcviewer-1-18-2005.exe
    or loaded in matlab by http://graphics.cs.cmu.edu/software/amc_to_matrix.m
  2) .global file 
    could be directed read with matlab
	has 96 dimension with the first 3 are root position in global coordinates.
	The other 93 are the corresponding motion in local body coordicates.
