OPTICOM OPERA - V 3.5 User Manual page 115

Objective perceptual analyzer
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C H A P T E R
5 :
W I D E
B A N D
A U D I O
Q U A L I T Y
T E S T I N G
Figure 5.33: Input Mapping Wizard step
Figure 5.33 shows the correct settings of the Input Mapping dialog. Before
actually observing the results of our measurement, it is necessary to choose
several options for the preprocessing of the signals. As Figure 5.35 shows,
the Automatic Delay Compensation in Normal mode on the Left channels was
selected. Please recall: the Normal and the Snap Mode are not enabled when a
file-based measurement is performed.
In addition to this we switch on the functions Static Gain Compensation and
Remove DC From Signals. Now, start the measurement by clicking on the
Finish button.
When choosing the diagram type Timesignals for the upper diagram and Model
Output Variables and ODG, the framework will look as shown in Figure
5.36, of course depending on the signals that are used for the measurement.
The more time elapses the more the result values in the lower diagram will
stabilize. When pressing the Reset Averaged Values button shown in Figure
5.34, observe how the result values are re-established.
Figure 5.34: Reset Averaged Values toolbar button
109

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