Performing measurements
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5.1.4
Tools
The buttons on the right edge of the screen provide the following tools:
Setting the frequency filter
You can restrict the evaluated frequency range while the measurement is ongoing.
Tap on the button. The Frequency Filter menu appears on the screen.
Current level of the ongoing measurement
Frequency spectrum of the ongoing measurement. The red curve represents
the set filter.
Buttons for setting the lower frequency limit
Buttons for setting the upper frequency limit
Use the cursor keys to set the lower and upper frequency limits.
The frequency range between these two limits is evaluated.
Note
The filter boundaries include a certain amount of flexibility, meaning that the
filtered noise may contain sounds that are outside the filter range but close to
the filter boundary.
When you tap this button, the HLE 7000 sets a default filter that suppresses very
low and very high frequencies.
Tapping this button will reset the current frequency filter.
The button
applies the displayed filter and returns you to the level measurement.
The measurement curve is updated. The lower and upper frequency limits of the filter
are displayed in the upper left corner of the image.
Changing the microphone gain
You can adjust the microphone gain during the measurement.
Tap on the button. The menu for the microphone gain opens. Select the desired level of
gain. The
button applies the new setting. The screen returns to the level
measurement.
