User's Manual

Frequently used menus
19
2.6 Frequency analysis menu
Tapping the Coherence curve always opens the following menu which provides tools
for analysing the frequency range.
Lower frequency limit
Shows the lower limit of the adjusted frequency range.
Tap the button to change the value.
Bandpass … to isolate a frequency range
Tap the button, then mark the required range in the frequency diagram.
The correlation is updated. The frequencies outside the selected range
are suppressed.
Filter reset
Tap the button to reset the frequency filter settings to the initial state.
Bandstop … to suppress a frequency range
Tap the button, then mark the required range in the frequency diagram.
The correlation is updated. The selected frequency range is suppressed.
Upper frequency limit
Shows the upper limit of the adjusted frequency range.
Tap the button to change the value.
Frequency spectrum
Allows to change between the following frequency diagram
options:
Coherence
… Coherence of the recordings of both sensors.
Spectrum L … Frequency spectrum of the sensor on the left.
Spectrum R … Frequency spectrum of the sensor on the right.
Spectrum L+R … Frequency spectra of both sensors.
x Orange curve … Sensor A
x Yellow curve … Sensor B
Automatic search for best filter
Provides 10 possible filter settings.
Coherence
curve
Correlation
curve