Contributions:DiffFilter
Synopsis
Take the derivative of a continuous time-series input wrt. time
Location
http://www.bci2000.org/svn/trunk/src/contrib/SignalProcessing/HilbertSignalProcessing/DiffFilter.cpp
Versioning
Authors
Jeremy Hill
Parameters
DiffOrder
0 = disable; 1 = first derivative; 2 = second derivative; etc
UnwrapDiff
Base at which to unwrap numerical deltas. 2*pi ( = 6.283185307179586232) is a useful base to take in order to unwrap phase differences (when unwrapped at 2*pi, the first derivative of HilbertFilter output when OutputSignal=2 yields instantaneous frequency * 2 * pi).
DivideByDeltaTime
Select whether to return raw sample-to-sample numerical deltas in seconds, or to divide these by the time delta to approximate a true derivative.
States
None.
See also
User Reference:Filters, Contributions:SignalProcessing, Contributions:HilbertSignalProcessing