HAS-Motion Software Documentation

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num_reflected_frames]]=**0 **! /[[#num_extrapolated_frames|num_extrapolated_frames]]=**0 **! /[[#num_buffered_frames|num_buffered_frames]]=**0 **! /filter_class=**butterworth **! /[[#add_extra_frames|add_extra_frames]]=**false **;** \\ **filter_class** can be butterworth or critically_damped ===== num_reflected_frames ===== numreflected.jpg filters are not particularly effective near the ends of the signal, so it is often useful to add an artificial buffer. frames can be reflected about the endpoints. ===== num_extrapolate_frames ===== numextrapolated.jpg ===== num_buffered_frames ===== numbufferedframes.jpg the signal can be buffered beyond the reflection or extrapolation. numextrapolatedandbuffered.jpg ===== add_extra_frames ===== onepassfilteredsignalwithextraframes.jpg the one pass filter adds a delay to the signals and truncates the end of the signal. onepassfilteredsignalwithextraframes.jpg a onepass filter is often used as an attempt to preserve an impact condition (or sudden discontinuity in the signal). an example might be a golf club immediately before impact. in an attempt to estimate the velocity of the club immediately impact two more frames of artificial data can be added by extrapolating the signal beyond the point of impact. see the circles in the above figures. ====== command dialog ====== onepass_dlg.jpg ====== legacy command name ====== **butterworth_filter_onepass** ! /signal_types= ! /signal_names= ! /signal_folder=original ! /signal_components= ! /result_folder=processed ! /event_sequence= ! /exclude_events= ! /cutoff_frequency=6 ! /num_reflected_frames=0 ! /num_buffered_frames=0 **;** }}}}}}}}}}}}}}