Batch General

HyperGraph 2D filter.  Low pass, ideal filter.

Batch Mirror

HyperGraph 2D filter.  Mirrors data before filtering to smooth start and end points of filtered curve.

NHTSA Butterworth

Filters data forward and backward using a second order Butterworth algorithm.

NHTSA FIR100

Performs 100 Hz finite impulse response filtering of a digitized time series.

FreqDomainDiff

Differentiates the given curve (time based) in the frequency domain.

IR

Impulse response filter function.

Resample

Resamples the given input curve to the specified data frequency.

SAE General

Displays secondary menus SAE (J211, Mar1995) and SAE (hg).

SAE (J211, Mar1995)

Complies with March 1995 SAE-J211 guidelines for 60 and 180 CFC filtering.

No Padding

Does not add any additional time to the x axis.  Filters the data forward, backward, forward and backward, or backward and forward.

Zero Padding

Pads data with constraints to improve filtered data appearance at start and end points.  Adds additional time to the x-axis at the zero value for y.  Filters the data forward, backward, forward and backward, or backward and forward.

Mirror Padding

Mirrors data before filtering to improve filtered data appearance at start and end points.  Filters the data forward, backward, forward and backward, or backward and forward.

ISO6487 Padding

Mirrors data before filtering according to the ISO 6487 standard.

SAE (hg)

HyperGraph 2D generic SAE filters.  Filters include SAE60, SAE180, SAE600, SAE1000, SAE General, SAE Mirror.