TC Electronic SYSTEM 6000 MKII Algorithm Manual - Lm6
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lM6
Fig 2
Color coding and target loudness for selected broadcast
platforms based on a consumer’s Dynamic Range
Tolerance, DRT. The aim is to center dynamic range
restriction around average loudness, in this case the
–20 dB line, thereby automatically avoiding to wash out
differences between foreground and background elements
of a mix.
Note how different the broadcast requirements are from
those of Cinema.
When production engineers realize the boundaries they
should generally stay within, less dynamics processing
is automatically needed during distribution, and the
requirement for maintaining time-consuming metadata at a
broadcast station is minimized.
In broadcast, the goal is to use the same loudness
measure for
- Production,
- Ingest,
- Linking
- Master Control Processing
- Logging
thereby ensuring better audio quality not only in DTV audio,
but across all broadcast platforms. LM6 and TC processing
can co-exist with PPM meters, VU meters or Dolby’s
LM100 meter. LM6 greatly increases the usability of LM100
in production environments because it provides running
status, and gives a standardized and intuitive indication of
both dialog and non-dialog program.