knock_gain[0]=0E
knock_gain[1]=0E
knock_gain[2]=0E
knock_gain[3]=0E
knock_gain[4]=0E
knock_gain[5]=0E
knock_gain[6]=0E
knock_gain[7]=0E
knock_reference[0]=64
knock_reference[1]=64
knock_reference[2]=64
knock_reference[3]=64
knock_reference[4]=64
knock_reference[5]=64
knock_reference[6]=64
knock_reference[7]=64