Loudness Meters - Calrec SUMMA User Manual

FIGURE 3 - BUS AND OUTPUT METERS

Loudness Meters

Loudness meters provide a way to monitor and regulate average loudness levels over the duration of a program.
Loudness meters are displayed as part of each Main meter on the Meter Panel(s).
FIGURE 4 - LOUDNESS METERS
There are six loudness metering modes available on the console, the details of which are displayed in a table below.
The loudness meter mode is set globally for the console: Tap METERS in the Show menu and tap the MODE button to
view a drop-down list of loudness modes to choose from. An appropriate loudness metering scale can also be set from
this screen, which alters the scale of all loudness meter bar graphs.
Loudness meter modes relate to standards set by organisations in different geographical regions. EBU (European
Broadcasting Union) relates to Europe, ATSC (Advanced Television Systems Committee) to North America and ARIB
(Association of Radio Industries and Businesses) to Japan. These are currently the main standards and are being widely
adopted in other geographical regions. Two extra modes called DPP Live and DPP Non-Live have been added to provide
additional guidelines in Live and Non-Live production environments. This was set up by various broadcasters in a group
known as the DPP (Digital Production Partnership).
118 SUMMA
Networked Audio Production System
METERING