Final Check Metering : Final Check Window
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Max True Peak alert threshold
Sets the threshold value (in dBTP) at which the Max True Peak numerical display
turns red. (In order to make it obvious there is an overload problem.)
Show LRA graph Tog gl es the LRA-repartition curve shown/hidden alongside the Loudness INT
and LRA
display. (where some meters would display a History Graph instead.)
The
LRA curve (the purple one) and other LIar displays are refreshed every sec-
ond. The LRA curve plots the
amount of time a given Loudness occurred (verti-
cally) against the Loudness, in LUFS (horizontally) The width of the filled space
below the curve represents the LRA. The left boundary of the filled space is the
LRA Inf (the ignored quietest 10%), and the right one, the LRA Sup (the ignored
loudest 5%)
Displayed interval The markers set the boundaries of the displayed LRA curve, in LUFS, to enable
zooming into the range where the program is located.
Preview
Shows a thumbnail of the layout of the Metering page.
Loudness Metering Notes
Loudness Graph Color Range
The boundaries for the dark-blue and red zones can be selected in the Setup page. (Color range marker sliders)
You can of course choose the maximum LUFS value for the transition to the red band, e.g. -23LUFS, however
momentary excursions beyond -23LUFS are not necessarily a problem since it is the average value we are con-
cerned with.
Keeping In the Spirit
Advertisers will always look for ways to make their messages stand out from the crowd. One way of achieving this
in the new world of R128 loudness delivery requirements is to have the majority of the advert quiet with one
excessively noisy section.
Broadcasters can foil attempts at such subterfuge by specifying a required value for max M or max S, although this
is not in the R128 recommendations.
If this is done then it makes sense to set the
Color Range transition to red at the same value. (For -23LUFS target
loudness -16LUFS is a good starting point.)
Report Files
A Final Check report file will look something like this when opened in Notepad or a text editor:
<?xml version="1.0" encoding="UTF-8"?> XML information
<FinalCheck_Metering> Title and start of results
<Stereo> First, showing results for the selected stereo pair
<Loudness_INT>-70</Loudness_INT> Loudness integrated (=averaged) on the whole file in LUFS
<Loudness_Range_LRA>0</Loudness_Range_LRA> Loudness range AKA lra in LUs
<Max_TruePeak>-144.5</Max_TruePeak> Maximum True Peak value in dBFS
<MML>-70</MML> Maximum momentary loudness AKA Max M
<MSL>-70</MSL> Maximum long-term loudness AKA Max S
</Stereo> End of results for the stereo pair
<Surround_5.1> Start of results for surround
<Loudness_INT>1.50099659</Loudness_INT> Loudness integrated (=averaged) on the whole file in LUFS
<Loudness_Range_LRA>4.75279236</Loudness_Range_LRA> Loudness range AKA lra in LUs
<Max_TruePeak>6.76408482</Max_TruePeak> Maximum True Peak value in dBFS
<MML>1.63770938</MML> Maximum momentary loudness AKA Max M
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