+LP
The +LP Loudness Processing option is available for numerous Cobalt® cards. It's also available as a purchased field-installed licensable feature upload. Using Linear Acoustic® AERO MAX® technology, loudness control is applied on up to six channels of audio from any audio inputs sourced by the host card. AEROMAX® algorithms use a sophisticated multiband approach to loudness processing. These algorithms can apply multi-faceted loudness correction specifically targeted to various frequency ranges and other characteristics within the program material, resulting in audio free from abrupt loudness or image shifts while preserving more of the original content than available using less refined approaches. Because +LP processes audio loudness locally and in sync with the video, loudness is processed without the large accumulated latency delay found in other loudness processors.
The loudness processor function receives up to six selected channels from the internal bus and performs ITU BS.1770 – ATSC A/85 loudness processing on the selected channels. A loudness processing profile best suited for the program material can be selected from several loudness processing presets. The loudness processor has a default target loudness of -24 LKFS. A Custom Preset user interface page allows detailed manipulation of various parametric factors that comprise each of the factory preset profiles, thereby allowing user “tweaking” of the loudness processing actions to suit individual preferences. Loudness processing options are available on a wide range of Cobalt cards.
High-quality, seamless Linear Acoustic® AEROMAX® Loudness Processing
Available for new cards or can be added to existing cards with easy field software upload
Default set to provide ATSC A/85 conformance
–24 LKFS loudness when used with AC-3 –24 dialnorm; no parametric setup required
Multiple user-selectable loudness profile preset choices with configurable target LKFS
Loudness Processing is available for the models listed below on product purchased new or as field software upgrade in the following packages:
- +LP51A, +LP51B Two independent 5.1-channel loudness processors
- +LP20A, +LP20B, +LP20C, +LP20D Four independent 2.0-channel loudness processors
- +LP20A, +LP20B, +UMA, +UMB Two independent 2.0-channel loudness processors; two upmixers
- +LP51A, +LP20A, +UMA 5.1-channel loudness processor, aux stereo (SAP) loudness processor, one upmixer
Available for the following Fusion3G® cards and models on product purchased new or as field software upgrade:
• 9901, 9921, 9931, 9985 (standard feature on 9985)
+LP, when used with the cards above, has custom parametric controls allowing engineering tailoring of EQ, AGC, and limiter sub-blocks.
Loudness Processing is available for numerous Compass® cards (listed below) on product purchased new or as field software upgrade in the following packages:
- +LP51 5.1-channel loudness processor
- +LP20 2.0-channel loudness processor
- +2LP20 Dual stereo loudness processors
Available for the following cards and models on product purchased new or as field software upgrade:
• 9033, 9034, 9035, 9061, 9062, 9066, 9067, 9081, 9083, 9085 (LP20/LP51 standard feature on 9085),
9086 (LP20 standard feature on 9086), 9301, 9305, 9321, 9322, 9323, 9341, 9381 - Loudness processing on Compass cards, when present with +UM option, has certain use restrictions regarding multiple feature usage. Please refer to Datasheet download available from this page (Downloads > Datasheet) for restrictions. Loudness processing options are not available on all Compass cards. See specific card page for more information.
Linear Acoustic, the “LA” symbol, UPMAX, AutoMAX, and AutoMAX-II are trademarks of Linear Acoustic Inc.