Soft dB Tenor 24bits Data User Guide - Manual (Page 45)

Tenor Data Logger Soft dB inc.
5.3.1 Filter
The Filter function is very useful for removing some frequency components on a group of
selected channels. Some typical tasks that can be done with this function are a DC filter, a
notch filter to remove the 60 Hz and its harmonics and a low-pass filter to remove high-
frequency noise for clearer playback. This function has a filter design interface, which is
presented in the next figure.
Figure 33: Filter function interface
The frequency response graph represents the filter response for the current filter
parameters. You don’t have to use any button to update the frequency response graph;
the graph is automatically updated when the filter parameters change. The filter
parameters are described in the following table:
Parameter Description
There are five available filter types: 1) ButterWorth
2) Chebyshev 3) Inverse Chebyshev 4) Elliptic and
5) Bessel.
The filter function control allows selecting a Lowpass,
Highpass, Bandpass or Bandstop filter. When a
Lowpass or Highpass filter is selected, only the Fc low
parameter is available. The Fc high parameter is
available for the Bandpass and Bandstop selections
only.
User Manual p. 45