Aim
Filter the signal to display and analyze only frequencies above a specific threshold, and to eliminate noise in the audible range (up to 20 kHz).
Procedure
important When you filter a recording, all call definitions and calls are deleted. Make sure you apply a filter before you Define a call.
1.In the Call Detection or Call Labeling screen, under View click the Filter button.
2.Enter the value you require in the Cut off frequency field.
3.Click Apply.
Notes
nA copy of the unfiltered recording is kept in the Recording List. See The Recording List