TC Electronic LM2, User Manual

Page: 7 / 46

7
INTROdUCTION
Fig 1.
Left: Peak-level-normalization results in systematic loudness differences between genres.
Right: Loudness normalization is a better strategy and makes peak level vary instead.
When production engineers realize the boundaries they should generally stay within, less dynamics processing is needed
during distribution, and the requirement for maintaining time-consuming metadata at a broadcast station is minimized.
In broadcast, the general goal is to use the same loudness measure for:
- Production
- Delivery Specs
- Ingest
- Linking
- Master Control Processing
- Logging
thereby ensuring better audio quality not only in DTV audio, but across all broadcast platforms. LM2, other TC loudness
analyzers and TC processing are all based on the same standardized measurements and may therefore be used as bricks
in a transparent signal path ranging from production to delivery.
LM2 can also co-exist with PPM meters, VU meters or Dolby’s LM100 meter. LM2 greatly increases the usability of LM100
in production and transmission because it provides useful running status, and gives a standardized indication of much
more than the level of speech.