How to Guide
Audio Loudness Monitoring
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The audio session display contains a variety of summary information on each channel of
the audio signal for the number of clips, mute, over and silence events that have occurred
during the audio session
Run Time
. Additionally the maximum Peak and High audio level
for each channel are also displayed.
Note:
-
The Peak value in the audio session display is the True Peak audio level
measurement and the High audio level value is based on the ballistic used for the
audio level. The True Peak measurement is based on a four times oversampling
of the audio signal as specified in ITU-R BS.1771.
For audio loudness measurements a calculation for each channel and channel pairs is
shown in the audio session display, along with the Program Loudness for the short and
infinite duration. The Program Loudness measurement is based on a summation of a
number of the audio channels and the duration of the measurement. The information on
the number of channels summed together is provided within the
Chans:
display and the
Short PD:
label indicates the duration of the short period used for the Short term
Loudness measurement. The infinite duration of the Loudness measurement is based on
the
Run Time
of the audio session and can be stopped, started or reset by the user.
Note:
-
To stop or start the audio session press the up or down arrows in either
the audio tile or audio session display. Press SEL to reset the Run Time of the
audio session in either the audio or audio session display.
