TC Electronic Radar Meter Bundle TDM - Manual (Page 9)

LM5/LM5D & AM6 -TDM / 7
ENGLISHENGLISH
LOUDNESS HISTORY: RADAR
The Loudness Radar shows a history of loudness over time. The loudness “landscape”
may be used to judge if loudness emphasis is put where you want it to be: If dialog
segments are balanced against action parts, if the chorus of a song has a lift against
the verse, if the audience is too loud in a gameshow, or maybe as a target to aim for
during a live transition etc.
Fig. 5, Different types of program shown on the Radar.
Left: 5.1 movie:
Pirates of the Caribbean on a 12 minute per revolution Radar: Low Loudness Range.
Center:
German news broadcast on a 4 minute per revolution Radar: Medium Loudness
Range.
Right:
Madonna’s Hung Up pop on a one minute per resolution Radar: High Loudness Range.
The duration of one radar revolution may be set between 1 minute and 24 hours. The
Radar has 3, 4, 6, 8, 10 or 12 dB between each concentric circle, while the 0 LU
point is always marked as the border between green and yellow at the bold concentric
circle, see Fig. 3. The 0 LU point is set on the Prefs page, typically between -12 and
-24 LUFS.
The “Transport Controls” (lower left on the display) are used to make the Radar run,
pause or reset. Note that these controls in LM5D appear as shown in Fig. 3.
The OBS indicator is lit to show certain inter-channel anomalies. Such conditions may
be defined on the Prefs page. The OBS indicator would typically trigger the operator to
switch to PPM page for a closer look of what’s going on.
The Peak indicator is lit to show that at least one channel is exceeding its true-peak
max. The threshold of the Peak Indicator is defined on the Prefs page, and recalled
with an LM5D preset.