Display Information
Audio Loudness Session
The Audio Loudn
ess Session display allows you to view an audio loudness
chart and values associated with audio loudness measurements. This instrument
maintains a running audio loudness session. (See Figure 38.)
Figure 3
8: Audio Loudness Session display
Configuring loudness parameters from the con figuration menu. From the
Loudness Settings menu in the CONFIG button menu, you can set the parameters
that affect loudness measurements. For example, the Loudness Filter/Measure
selec
tion controls which of three weighting filters are applied to the audio loudness
measurement. It is used by the loudness algorithm to calculate the audio loudness.
Elements of the Audio Loudness Session display.
Max Value: Shows the maximum loudness value recorded during the session.
Min
Value: Shows the minimum loudness value recorded during the session.
Loudness Session Avg : Shows the loudness session average, which is a
su
mmed average of all the values recorded in the session.
Short Period: Shows the current duration of the short period loudness
a
verage.
Channel Summation: Shows the summation of audio channels currently
used to compute the loudness average.
Target Value: Shows the currently defined Target Loudness level.
Loudness Session Time: Shows the current duration of the loudness session
since last reset.
WFM8200 and WFM8300 Waveform Monitors 69
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