Linear Acoustic AERO.100 User Manual page 56

AERO.100 User Guide
We recommend starting with a factory preset and modifying it, if necessary, to suit your needs.
Which preset you choose and what changes you make depends on your source material and
what your goals are for the audio you broadcast. A few guidelines are presented here and
descriptions of the factory presets are found in section 5.15.
We also highly recommend saving each audio program's preset with a name that identifies the
program. For example, if you decide to use TV 5B Light on multiple channels then save each
program's preset with a unique name; TV 5B Light KWXY Main and TV 5B Light KWXY SAP. If
any changes are made, however small, to the TV 5B Light KWXY Main preset the changes will
not affect the SAP channel. If TV 5B Light is used for multiple audio programs then any change
in that preset will affect every program using that preset.
There is independent configuration for each DRC in every AMX Instance.
If the dialogue level of 100% of the content you record, produce, create, ingest, and receive
were recorded at the same level then loudness control would be easy. In the real world a
typical television station, or channel, receives content from many sources. Dialogue levels, let
alone the average program levels, are not consistent. Controlling the loudness of the program
material delivered to viewers, and especially the program to program level changes, is one of
the original concepts behind Linear Acoustic AEROMAX processing which has been in place long
before loudness regulations.
A viewer's home is not the same listening environment as a movie theater or audio mix room or
a mixing theater! Home viewers listen at lower levels than professionals do when mixing and
reviewing material. A majority of viewers are also listening to programs on the small, low
power, rear or down facing speakers in the typical thin panel TV. The proper (and judicious) use
of noise reduction, AGC, equalization, wideband and/or multiband compression and look ahead
limiting can be used to help recreate the experience at home that the program creator had in
mind in the mix room. There is the capability to improve the audio quality of older content
that is not up to today's audio quality standards. There is also the power to help automated
operations to achieve more consistent audio for live events, live news, and switching between
local, syndicated, commercial, promotional and network content.
The ability of AERO.100 processing and loudness control to provide all of these functions in a
flexible, high quality and reliable fashion has made Linear Acoustic the choice of some of the
largest broadcasters in the world for over 14 years. The continued increase of loudness
regulation worldwide is the latest reason for continuing to expand and refine the capabilities of
the AERO processors.
What does all of this mean to you, the user?
If the loudness level of the content that you play varies over +/- 10 dB range around your target
LKFS level then your primary concern is going to be loudness control. If your content varies +/-
©2016 TLS Corp. ALL RIGHTS RESERVED Oct 2016 Page 55