Loudness - DEVA Broadcast DB7002 Maintenance And Operation Instruction Manual

LOUDNESS

This Screen shows the average program loudness measurements as defined by ITU BS.1770-4
and EBU R128 recommendations. The following measurements are available:
• Momentary – average program loudness measured over a 0.4s sliding time window, not
gated;
• Short-term – average program loudness measured over a 3s sliding time window, not gated;
Long-term – average program loudness measured over a variable sliding time window,
•
gated as described in ITU BS.1770-4. The time window can be varied between 10s and
120s.
The page offers all the above measurements in two display forms – high refresh rate bar graphs
for displaying current values and a time graph for extended visualization over time.
The user can modify the processing and appearance of the measurement using the following
settings:
• Long-term – a slider to select the length of the Long-term loudness measurement sliding
time window, from 10s to 120s;
• [Reset Long-term] – a button to reset Long-term measurement;
• Mode – select between [ITU BS.1770-4] and [EBU R128] mode;
Span – select time graph time span;
•
• Range – select time graph measurement range.
NOTE: DB7002 has a single Loundness meter that is switched between FM and DAB/DAB+
depending on the currently opened screen.
65 Aleksandar Stamboliyski Str., 8000 Bourgas, Bulgaria
Tel: +359 56 820027, Fax: +359 56 836700
E-mail: office@devabroadcast.com ,Web: www.devabroadcast.com
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