Butterworth IIR Filter

NI-SCOPE LabVIEW

Butterworth IIR Filter

The input waveform is filtered with a Butterworth IIR algorithm. The type of the filter is specified by Filter Type as any of the following values:

  • lowpass
  • highpass
  • bandpass
  • bandstop

The order of the filter is specified by Filter IIR Order. Also, a number of points equal to Percent Waveform Transient divided by 100 times the input size are eliminated from the beginning of the filtered waveform so the transient response of the filter does not affect further measurements.

Units

Volts

X Units

Seconds (nonlinear time delay)

Resulting Array Size

inputSize × (1 – Percent Waveform Transient / 100)

Related Topics

Filter Measurements

Butterworth Filters