Adjusting The Upmix - Linear Acoustic AERO.2000 User Manual

Audio/loudness manager

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AERO.2000 User Guide July 2016

3. Upmix Enabled and Auto: On.

a. 5.1 surround sources routed to Inputs 1/2, 3/4, 5/6 are passed through to the

loudness controller

b. If Input channels 3, 5 and 6 are below the 5.1 surround detection threshold (this

defines a stereo source on 1/2) the unit will crossfade to an upmix of channels 1

and 2.

c. Audio above the 5.1 surround detection threshold level, on channels 3, OR 5 OR

6, will result is a crossfade back to 5.1 pass through mode.

d. The 5.1 threshold and crossfades are set here:

i. Instance 1 > UpMAX II Pgm 1 > Auto Mode Settings > Discrete Detection

ii. Instance 1 > UpMAX II Pgm 1 > Transitions > Discrete -> Upmix

iii. Instance 1 > UpMAX II Pgm 1 > Transitions > Upmix -> Discrete

4. Upmix Enabled and Auto: Metadata Auto/No

5. Upmix Enabled and Auto: Metadata Yes/Auto

6. Upmix Enabled and Auto: Metadata Yes/No

6.10.3

6.10.3 Adjusting the Upmix

6.10.3

Adjusting the Upmix

There are many adjustable parameters that allow UPMAX to be tuned to suit the source

material. The flexibility allows UPMAX and AutoMAX to be used by broadcasters of sports,

music, entertainment, and mixed content and for both live and recorded programs.

A preset that we call "Center Diverged is used by a great many broadcasters that have varied

content throughout the day. The settings are shown in Figures 6-16, 6-17 and 6-18, below. TV

channels that specialize in a particular content type such as sports, old TV shows or movies can

finely tune UPMAX to present the best possible 5.1 surround sound from their stereo content.

1. UPMAX Parameters: Instance 1 > UpMAX II Pgm 1 > Main Settings >

a. Center Extraction enables the creation of a center channel from the stereo

source

b. Surround Extraction enables the creation of the Ls and Rs rear channels from the

stereo source.

c. LFE Generation enables the creation of a .1 (LFE) channel that is downmix

compatible, low pass filtered, and bass enhanced low frequency content from

the L, C and R channels.

d. Generate LFE When Upmix Disabled enables the addition of the LFE content

described above to the existing 5.1 surround content.

Threshold:

L16/1/18039

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