Linear Acoustic AERO.qc User Manual page 54

Audio quality controller with optional hd/sd-sdi and dolby decoding

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Linear Acoustic AERO.qc User Guide

NOTE: This is the control used to adjust overall loudness of a facility. An ITU-R

BS.1770 compliant loudness meter should be used with the goal of setting the

loudness to match either the facility target or the dialnorm value in metadata.

NOTE: As an example, with TV 5B Gen selected, normal dialogue-based program-

ming applied, and Output Level set to -11dB, loudness will measure approxi-

mately -27dBLKFS using a Linear Acoustic LAMBDA or Dolby LM100.

Upmixing

Upmixing is the process whereby two channel audio can be re-mapped into 5.1 channels

using level and phase detection techniques. The proprietary, industry standard and road-

proven UPMAX

channel audio to be created from normal stereo inputs, and performs even better when

presented with matrix surround encoded two channel audio (i.e. LtRt). Two channel mono

can also be accommodated in an audibly pleasing manner.

Critically, the UPMAX

sented with Dolby Digital (AC-3) encoded audio that is downmixed in their set top box or

receiver and they happily listen in stereo, none the wiser that more information is actually

present. Upmixing systems that use phase shifting techniques can produce unacceptable

results in these systems obscuring dialog and amplifying background artifacts.

There are very few controls required for setup of the upmixer:

•

Enable Center: On sends center channel audio to the Center output; Off keeps it in

Left and Right.

•

Enable Surround: On sends surround information to the Surround Outputs; Off

keeps it in Left and Right.

•

Enable LFE: On sends bass enhancement audio to the LFE channel; Off disables

bass enhancement.

• Final Limiter Drive: -6dB - +6dB

-Sets the level at which the wideband sum of all bands is fed to the final limiter.

• Output Level: -36dB - 0dB

-Sets the output level for the current preset. Can be used to match the mea-

sured loudness of one preset to another. This is useful as more aggressive pre-

sets will measure differently from less aggressive versions.

algorithm is incorporated in the AERO.qc. This allows for realistic 5.1

algorithm is fully downmix compatible. Many viewers are pre-

Presets & Processing Adjustment

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