The Smoothed Filter channel generates an output channel that is a smoothed representation of the input channel without generating any phase lead or lag. The filter is a simple boxcar filter where each output sample is the linear average of a user-specified number of input samples.
For example, for a tap count of five, the filter averages the current sample, the two samples before, and the two samples after. Note that the channel backfills the initial output samples with the first fully filtered output value. For example, if the tap count is nine, the first four output samples are assigned the same value as the fifth output sample value.
NOTE
The Smoothed Filter can result in loss of data significance if not used properly. In general, it should not be necessary for analog input channels that use digital anti-aliasing filters. It is provided primarily for digital pulse counter inputs.
Name: Each computed channel must have a unique name and contain valid characters (single and double quotes not permitted). If changed, all references to the channel change automatically. If removed, all references to the channel remain and you must manually remove if no longer required.
Input channel with sample rate: The input channel(any non-sink channel).
Filter Length: Specify the length of the boxcar filter. The number must be an odd number between 3 and 201.