2 or 3 filtering mechanisms?

General Website and Documentation errors
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The formulation could be better. But it is two:

  1. The accelerometers use low pass controlled by INS_ACCEL_FILTER
  2. The gyros use low pass and notch filters controlled respectively INS_GYRO_FILTER and HNTC_*
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So what are FILTx_TYPE series of params?