User Reference:LPFilter

Function

The LPFilter is a simple single-pole temporal low pass filter with a time constant $T$ (given in units of a sample's duration), a sequence $S_{in,t}$ as input and a sequence $S_{out,t}$ as output (where $t$ is a sample index proportional to time), and obeying

$S_{out,0}=(1-e^{-1/T})S_{in,0}$

$S_{out,t}=e^{-1/T}{S}_{out,t-1}+(1-e^{-1/T})S_{in,t}$

Typically, the LPFilter would be used to remove high-frequency noise from the Classifier's output.

Parameters

LPTimeConstant

The filter's time constant in units of sample blocks, or in seconds if followed with an "s".

Consistent with its mathematical limit, a value of

LPTimeConstant= 0

disables the LPFilter.

States

None.

See also

Programming Reference:IIRFilterBase Class