Chapter 3: Factory Presets - Linear Acoustic AERO.ASI User Manual

Linear Acoustic AERO.ASI User Guide

Chapter 3: Factory Presets

This section lists each preset in alphabetical order, as they appear in the AERO.ASI and the remote
interface. Each preset's adjustable processing parameters are described. Some presets do not use ev-
ery parameter. For example, TV 4B Gen does not use the 5th EQ band.
All presets are adjusted so that with the input content averaging around -24 LKFS, the output is
optimized to produce -24 LKFS, ± 1–2 dB per ATSC A/85.
This calibrated measurement is made with a Linear Acoustic LQ-1000 or LQ-1, with 10 second in-
NOTE:
tegration. Longer integration times produce measurements with less variation and audio with more
dynamic range. Integration times which are too long (i.e. Infinite) will not help when checking real-
time compliance, so 10 seconds is a good compromise.
Fine Arts 5B Gen
Fine Arts 5-Band General offers medium processing appropriate for artistic programming that may
have large dynamic range variations. It produces consistent loudness and spectral balance.
ITU 5B Loudness Lim
ITU 5-Band Loudness Limit utilizes a specially tuned Multiband AGC Limiter and the Final Limiter
to slowly adjust the average program loudness to a specific loudness value as measured over time. The
Multiband Limiters and Final Limiters act until the very slowly responding wideband AGC catches up.
The multiband AGC is bypassed (1:1) so spectral balance is unaffected. This preset can be appropriate
for ingest, live, or network transmission applications where content is pre-normalized.
Music 5B Hvy
Music 5-Band Heavy is an aggressive preset for TV music channels that effectively delivers music pro-
gramming to small televisions and portable receivers.
MVPD 5B Gen
MVPD 5B Gen is intended for Multiple Video Program Distributors who may not have full control
of all programs, interstitials or commercials present in a given network stream. It applies medium-light
multiband processing, sets Gate and Freeze to prevent background noise pull-up, and is tuned for all
genres.
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