Manual

LM2 (optional)
Loudness Pilot English Manual (2014-10-07) 106
Loudness section
Loudness Std. parameter
The Program Loudness measure is always root-
ed in the ITU-R BS.1770 loudness model. This
parameter sets measurement gating. Note that
the parameter only influences Program Loud-
ness, and not Sliding Loudness or Loudness
Max.
ITU BS.1770-3 setting
This setting reflects the latest revision of ITU-R
BS.1770. Relative gate at -10LU, safety gate at
-70LUFS.
Leq(K) setting
This setting reflects the original version of ITU-
R BS.1770. No measurement gate besides from
at safety gate at -70LUFS, so the user doesn’t
need to precisely start and stop a measurement
in order to avoid bias from complete silence.
Cnt of Grav. setting
The standard setting from early versions of TC
radar meters. Relative gate at -20LU, safety gate
at -70LUFS.
LU Reference parameter
The LU Reference parameter defines the loud-
ness required to obtain a “12 o’clock” reading on
the outer ring of the Radar display, which is the
same as the border between green and yellow
on the Radar.
Loudness Unit parameter
LUFS setting
All measurements of program loudness and slid-
ing loudness are shown in units of LUFS – that
is, in Loudness Units on the absolute scale. This
is the normal setting for the Loudness Unit pa-
rameter, which we recommend for most applica-
tions.
Loudness Range is always shown in units of LU,
because it is basically a measurement of ‘range’
or of the distance between a high and a low
loudness level.
LU setting
With this setting, measurements of program
loudness and sliding loudness are shown in units
of LU – that is, in Loudness Units on a relative
scale. The 0LU is by definition the target loud-
ness level, such as -23.0LUFS. So by selecting
“LU”, one can immediately see if a loudness level
is above the target level (e.g. +1.2LU) or below
(e.g. -3.4LU).