User guide
Getting Started with CapSense
®
Document No. 001-64846 Rev. *I 43
Figure 3-15. IIR Filter Step Response
The general equation for a first-order IIR filter is:
Equation 18
Figure 3-16 and Figure 3-17 illustrate the results of a first-order IIR filter on real CapSense data using the filter
equation with k = 16:
Equation 19
Figure 3-16. IIR Filter Noise