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Loudness Range
Loudness range (LRA) is a supplemental measurement for loudness. It is a statistical distribution of
measured loudness that quantifies the variations. The measurement is presented in LU. A typical promo
would have an LRA of 5 +/-1 LU. A typical theatrical drama would have an LRA of 15 +/-1 LU.
Control
Other than enabling the loudness meter for your facility's needs, the program segment length is
needed to be defined by the operator or other control point. When loudness metering is enabled, the
timer control buttons are used for control of the integration timer and no longer for the count up timer. To
control the up (and down) timer, press the timer option button to control the timers with the overbridge
knobs. The control of integration time will be the START/STOP and RESET buttons. In addition, a GPIO
channel number may be defined to provide control of the integration time from another location other than
the operator.
The pinout is:
Pin
Function
1
START
2
STOP
3
RESET
© 2016 Axia Audio - Rev 2.0
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