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Smoothed Filter

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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.

 

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