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C H A P T E R
6 :
T E L E P H O N Y
T E S T I N G
show either framewise values (Timesignals, Spectra, Excitation), values averaged
since the start of the measurement (Raw PSQM, MOS etc, MOS vs. time), or
overall values (Final Result). The values shown in the "Final Result" diagram are
the only ones, that take the start and the stop point into account, as defined by
P.861. All other averaged values ignore the stop point. The start and the stop
point exclude leading and trailing silent periods from the measurement.
Figure 6.6: PSQM Result Type Window
The information about the current measurement settings that are displayed on
the right side of each diagram is described first(see Figure 6.7). The meaning
of these values is as shown in Table 6.1:
Displayed Values
Time:
The time when the measurement has been finished
Hoth Noise
Setting of the level of the background masking noise
F Smpl:
Sample rate of input signals
Filter
Setting of the listening condition
BW Limit:
Highest frequency component taken into account
Level:
The current setting of the listening level
Tracking:
Status of the delay tracking function (on or off)
DC Filter:
Status of the DC filter (on or off)
Delay:
Delay in ms (first from top) as well as in samples
Status:
Reliability of the automatic delay compensation
Atten:
Level difference between reference and test signal (dB)
Rel Time:
Current point of time in the measurement
Table 6.1: Interpretation of the displayed values
B A N D
V O I C E
Interpretation
(second from top)
(0..100%, Fixed=fixed delay set).
125
Q U A L I T Y
Display of the
Measurement
settings
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