TC Electronic DB6, Manual

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LM6
English Manual (2014-03-05) 59
Stereo or 5.1 Integrity setting
When the Alert Indicator parameter is set to Ste-
reo or 5.1 Integrity, the red Alert indicator on the
Radar page will be lit when neither valid Stereo
nor 5.1 signals are detected.
Off setting
When the Alert Indicator parameter is set to Off,
the Alert indicator is disabled.
Peak Indicator parameter
Range: -12 to +3 dBFS
Use the Peak Indicator parameter to specify the
value that should trigger the Peak indicator in
the upper right corner of the Radar display. E.g.,
if you set Peak Indicator to -1 dBFS, the PEAK
indicator on the Radar page will be lit when the
signal is -1 dBFS or above.
True Peak Meters section
TP Meters parameter
Use the TP Meters parameter to switch the True
Peak meters on the right edge of the LM6 user
interface between Off, Stereo and 5.1 displays.
True Peak Input meters showing
Stereo and 5.1 input signals
Preset View section
Preset View button
Click the Preset View button to turn the Engine
View display on the right hand side of the display
on or off.
When Preset View is on, the two signal process-
ing engines and the two LM6 instances are dis-
played on the right hand of the display with the
currently active presets. When Preset View is off,
a larger part of the interface is available for the
True Peak Meters.
Preset View switched on
M Loudness Alert section
M Threshold parameter
Range: -30 to 0 LUFS / “Off”
Use the M Threshold parameter to specify the
value that should trigger a High Loudness alarm.
This alarm will be sent through the GPO.
LM6 – Stat(istic)s page
The Statistics page gives an overview of essen-
tial descriptors:
– Program Loudness
– Loudness Max
– Loudness Range
– True-Peak Max
– Sliding Loudness
– PLR (Peak to Loudness Ratio)
About PLR (Peak to Loudness Ratio)
PLR (Peak to Loudness Ratio) measurements
often correlate with audio quality – be careful
not to force it too low. Programs and tracks
should be allowed to live.
! Important: Clicking the Reset button will reset
the meters and the log file.
Level versus loudness
When level normalization in audio distribution is
based on a peak level measure, it favors low dy-
namic range signatures as shown in Fig 1. This is
what has happened to CD.